Dr. rer. nat. Dietmar Kracht

Wissenschaftlich-Technischer Geschäftsführer

Telefon:

+49 511 2788-113

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Kurzbiographie:

Studium der Physik an der Christian-Albrecht-Universität zu Kiel, Abschluss als Diplom Physiker, 2003 Promotion an der Universität zu Lübeck zu dem Thema „Diodengepumptes Festkörperlasersystem zur Erzeugung gütegeschalteter Mikrosekunden–Laserpulse im grünen Spektralbereich“.

Seit 2002 ist Dr. Dietmar Kracht am Laser Zentrum Hannover e. V. (LZH) tätig. Von 2002 bis 2004 Projektleiter für diodengepumpte Festkörperlaser und Ultrakurzpulsfaserlaser, 2004 bis 2005 Leiter der Gruppe Solid-State Photonics, 2005 bis 2008 Leiter der Abteilung Laserentwicklung.

Dr. Dietmar Kracht ist seit 2008 Wiss.-Tech. Geschäftsführer des LZH und wurde 2009 in den Vorstand des LZH berufen.

Hauptforschungsgebiete:

Laserphysik
Lasersysteme für Anwendungen im Weltraum
Faserlaser und -komponenten

nach oben

LZH-Veröffentlichungen

Zeitschriftenbeiträge (reviewed)

D. Kracht, J. Neumann, J. H. Pöld, H. Tünnermann, P. Weßels, B. Willke, Beam quality and noise properties of coherently combined ytterbium doped single frequency fiber amplifiers. Optics Express 20 (19), 19600–19606 (2011)

M. Schimek, H. Haferkamp, D. Herzog, D. Kracht, Laser Bead-on-Plate Welding and Overlap Seams for Increasing the Strength and Rigidity of High Strength Steel. Advanced Materials Research (137), 161–190 (2010)

F. Fischer, S. Kreling, P. Jäschke, M. Frauenhofer, D. Kracht, K. Dilger, Laser Surface Pre-Treatment of CFRP for Adhesive Bonding in Consideration of the Absorption Behaviour. The Journal of Adhesion 4-6 (88), 350–363 (2012)

D. Kracht, H. Sayinc, S. Yilmaz, M. Wysmolek, K. Hausmann, C. Ottenhues, D. Wandt, A. Wienke, J. Neumann, Innovative Laser Sources Operating Around 2 µm. Physics Procedia (83), 1184–1195 (2016)

M. Schultz, O. Prochnow, A. Rühl, D. Wandt, D. Kracht, Sub 60 fs ytterbium-doped fiber laser with a fiber-based dispersion compensation. Optics Letters 16 (32), 2372–2374 (2007)

M. Frede, R. Wilhelm, D. Kracht, C. Fallnich, Nd:YAG ring laser with 213 W linearly polarized fundamental mode output power. Optics Express 19 (13), 7516–7519 (2005)

V. Kuhn, P. Weßels, J. Neumann, D. Kracht, Stabilization and power scaling of cladding pumped Er:Yb-codoped fiber amplifier via auxiliary signal at 1064 nm. Optics Express 20 (17), 18304–18311 (2009)

M. Schultz, H. Karow, O. Prochnow, D. Wandt, U. Morgner, D. Kracht, All-fiber ytterbium femtosecond laser without dispersion compensation. Optics Express 24 (16), 19562–19567 (2008)

M. Frede, D. Kracht, M. Engelbrecht, C. Fallnich, Compact high-power end-pumped Nd:YAG laser. Optics and Laser Technology 3 (38), 183 (2006)

V. Kuhn, D. Kracht, J. Neumann, P. Weßels, Dependence of Er:Yb-codoped 1.5 µm amplifier on wavelength-tuned auxiliary seed signal at 1 µm wavelength. Optics Letters 24 (35), 4105–4107 (2010)

M. Steinke, A. Croteau, C. Paré, H. Zheng, P. Laperle, A. Proulx, J. Neumann, D. Kracht, P. Weßels, Co-seeded Er3+:Yb3+ single frequency fiber amplifier with 60 W output power and over 90% TEM00 content. Optics Express 14 (22), 16722–16730 (2014)

M. Frede, R. Wilhelm, D. Kracht, 250 W end-pumped Nd:YAG laser by direct pumping into the upper laser level. Optics Letters 24 (31), 3618–3619 (2006)

V. Kuhn, S. Unger, S. Jetschke, D. Kracht, J. Neumann, J. Kirchhof, P. Weßels, Experimental Comparison of Fundamental Mode Content in Er:Yb-Codoped LMA Fibers With Multifilament- and Pedestal-Design Cores. Journal of Lightwave Technology 22 (28), 3212–3219 (2010)

M. Steinke, J. Neumann, D. Kracht, P. Weßels, Gain dynamics in Er$^3$+:Yb$^3$+ co-doped fiber amplifiers. Optics Express 11 (23), 14946–14959 (2015)

M. Frede, B. Schulz, R. Wilhelm, P. Kwee, F. Seifert, B. Willke, D. Kracht, Fundamental mode, single-frequency laser amplifier for gravitational wave detectors. Optics Express 2 (15), 459–465 (2007)

V. Kuhn, D. Kracht, J. Neumann, P. Weßels, 67 W of Output Power From an Yb-Free Er-Doped Fiber Amplifier Cladding Pumped at 976 nm. IEEE Photonics Technology Letters 7 (23), 432–434 (2011)

M. Steinke, J. Neumann, D. Kracht, P. Weßels, Gain dynamics in Raman fiber lasers and passive pump-to-Stokes RIN suppression. Optics Express 13 (23), 16823–16837 (2015)

A. Grüninger, M. Hustedt, M. Huse, D. Kracht, H. Haferkamp, A. Ostendorf, Surface Texturing by Laser Cladding. Journal of Laser Applications 2 (23), 022008/1-6 (2011)

V. Kuhn, D. Kracht, J. Neumann, P. Weßels, Er-doped photonic crystal fiber amplifier with 70 W of output power. Optics Letters 16 (36), 3030–3032 (2011)

M. Steinke, H. Tünnermann, J. Neumann, D. Kracht, B. Samson, G. Gu, L. Dong, P. Weßels, TEM00 mode content measurements on a passive leakage channel fiber. Optics Letters 3 (40), 383–386 (2015)

F. Haxsen, A. Rühl, M. Engelbrecht, D. Wandt, U. Morgner, D. Kracht, Stretched-pulse operation of a thulium-doped fiber laser. Optics Express 25 (16), 20471–20476 (2008)

M. Hinkelmann, M. Baudisch, D. Wandt, U. Morgner, K. Zawilski, P. Schunemann, J. Neumann, I. Rimke, D. Kracht, High-repetition rate, mid-infrared, picosecond pulse generation with µJ-energies based on OPG/OPA schemes in 2-µm-pumped ZnGeP2. Optics Express 15 (28), 21499–21508 (2020)

M. Steinke, T. Theeg, H. Tünnermann, M. Karow, V. Kuhn, P. Jahn, O. de Varona Ortega, J. Neumann, P. Weßels, D. Kracht, Single-frequency fiber amplifiers for next-generation gravitational wave detectors. IEEE J. Sel. Top. Quant. 3 (24), 3100613 (2017)

F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Pulse characteristics of a passively mode-locked thulium fiber laser with positive and negative cavity dispersion. Optics Express 18 (18), 18981–18988 (2010)

D. Mortag, T. Theeg, K. Hausmann, L. Grüner-Nielsen, K. G. Jespersen, U. Morgner, D. Wandt, D. Kracht, J. Neumann, Sub-200 fs Microjoule Pulses from a Monolithic Linear Fiber CPA System 16. Optics Communications Accepted 02.11.2011, 1–5 (2011)

F. Stutzki, C. Gaida, M. Gebhardt, F. Jansen, A. Wienke, U. Zeitner, F. Fuchs, C. Jauregui, D. Wandt, D. Kracht, J. Limpert, A. Tünnermann, 152 W average power Tm-doped fiber CPA system. Optics Letters 16 (39), 4671–4674 (2014)

F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Pulse energy of 151 nJ from ultrafast thulium-doped chirped-pulse fiber amplifier. Optics Letters 17 (35), 2991–2993 (2010)

D. Mortag, D. Wandt, U. Morgner, D. Kracht, J. Neumann, Sub-80-fs pulses from an all-fiber-integrated dissipative-soliton laser at 1 µm. Optics Express 2 (19), 546–551 (2011)

T. Theeg, H. Sayinc, J. Neumann, D. Kracht, All-Fiber Counter-Propagation Pumped Single Frequency Amplifier Stage With 300-W Output Power. IEEE Photonics Technology Letters 20 (24), 1864–1867 (2012)

F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Monotonically chirped pulse evolution in an ultrashort pulse thulium-doped fiber laser. Optics Letters 6 (37), 1014–1016 (2012)

D. Mortag, T. Theeg, K. Hausmann, L. Grüner-Nielsen, K. G. Jespersen, U. Morgner, D. Wandt, D. Kracht, J. Neumann, Sub-200 fs microjoule pulses from a monolithic linear fiber CPA system. Optics Communications 5 (285), 706–709 (2012)

C. Basu, P. Weßels, J. Neumann, D. Kracht, High power single frequency solid state master oscillator power amplifier for gravitational wave detection. Optics Letters 14 (37), 2862–2864 (2012)

T. Theeg, H. Sayinc, J. Neumann, D. Kracht, Monolithic counter-propagation pumped single frequency fiber amplifier stage with 300W output power. IEEE Photonics Technology Letters 20 (24), 1864–1867 (2012)

F. Haxsen, A. Wienke, D. Wandt, J. Neumann, D. Kracht, Tm-doped mode-locked fiber lasers. Optical Fiber Technology 6 (20), 650–656 (2014)

C. Ottenhues, T. Theeg, K. Hausmann, M. Wysmolek, H. Sayinc, J. Neumann, D. Kracht, Single-mode monolithic fiber laser with 200 W output power at a wavelength of 1018 nm. Optics Letters 21 (40), 4851–4854 (2015)

P. Booker, R. Caspary, J. Neumann, D. Kracht, M. Steinke, Pump wavelength dependence of ASE and SBS in single-frequency EYDFAs. Optics Letters 19 (43), 4647–4650 (2018)

T. Theeg, H. Sayinc, J. Neumann, L. Overmeyer, D. Kracht, Pump and signal combiner for bi-directional pumping of all-fiber lasers and amplifiers. Optics Express 27 (20), 28125–28141 (2012)

M. Hildebrandt, M. Frede, P. Kwee, B. Willke, D. Kracht, Single-frequency master-oscillator photonic crystal amplifier with 148 W output power. Optics Express 23 (14), 11071–11076 (2006)

M. Hildebrandt, M. Frede, D. Kracht, Narrow-linewidth ytterbium-doped fiber amplifier system with 45 nm tuning range and 133 W of output power. Optics Letters 16 (32), 2345–2347 (2007)

P. C. Repgen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Sub-50 fs, µJ-level pulses from a Mamyshev oscillator-amplifier system. Optics Letters 24 (44), 5973–5976 (2019)

U. Bünting, H. Sayinc, D. Wandt, U. Morgner, D. Kracht, Regenerative thin disk amplifier with combined gain spectra producing 500 µJ sub 200 fs pulses. Optics Express 10 (17), 8046–8050 (2009)

T. Theeg, C. Ottenhues, H. Sayinc, J. Neumann, D. Kracht, Core-pumped single-frequency fiber amplifier with an output power of 158 W. Optics Letters 1 (41), 9–12 (2016)

M. Hildebrandt, M. Frede, D. Kracht, Single-frequency Yb:YAG non-planar ring oscillator fiber amplifier source at 1030nm. Optics Communications 1 (273), 260–262 (2007)

P. Repgen, B. Schuhbauer, M. Hinkelmann, D. Wandt, A. Wienke, U. Morgner, J. Neumann, D. Kracht, Mode-locked pulses from a Thulium-doped fiber Mamyshev oscillator. Optics Express 9 (28), 13837–13844 (2020)

A. Büttner, U. Bünting, D. Wandt, J. Neumann, D. Kracht, Ultrafast double-slab regenerative amplifier with combined gain spectra and intracavity dispersion compensation. Optics Express 21 (18), 21973–21980 (2010)

M. Tröbs, S. Barke, J. Möbius, M. Engelbrecht, D. Kracht, L. d'Arcio, G. Heinzel, K. Danzmann, Lasers for LISA: overview and phase characteristics. Journal of Physics: Conference Series 1 (154), 012016 (2009)

M. Hildebrandt, S. Büsche, P. Weßels, M. Frede, D. Kracht, Brillouin scattering spectra in high-power singlefrequency ytterbium doped fiber amplifiers. Optics Express 20 (16), 15970–15979 (2008)

G. Pelegrina-Bonilla, K. Hausmann, K. Liu, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Matching of the propagation constants in an asymmetric single-mode fused fiber coupler for core pumping thulium-doped fiber at 795 nm. Optics Letters 11 (37), 1844–1846 (2012)

A. Büttner, M. Ernst, M. Hunnekuhl, R. Kalms, L. Willemsen, P. Weßels, D. Kracht, J. Neumann, the MOMA laser team, Space-Qualified Pulsed DPSS-UV Laser for Martian Subsurface Exploration. Proc. Conference on Lasers and the Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC) , ca_4_5 (2019)

M. Tröbs, S. Barke, J. Möbius, M. Engelbrecht, T. Theeg, D. Kracht, B. Sheard, G. Heinzel, K. Danzmann, Fiber modulators and fiber amplifiers for LISA. Journal of Physics: Conference Series 1 (288), 012042 (2010)

M. Hinkelmann, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Mode-locked Ho-doped laser with subsequent diode-pumped amplifier in an all-fiber design operating at 2052 nm. Optics Express 17 (25), 20522–20529 (2017)

G. Pelegrina-Bonilla, K. Hausmann, H. Tünnermann, P. Weßels, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Analysis of the Coupling Mechanism in Asymmetric Fused Fiber Couplers. Journal of Lightwave Technology 13 (32), 2382–2391 (2014)

E. Chatzizyrli, N. Tinne, R. Lachmayer, J. Neumann, D. Kracht, Modeling of photoluminescence in laser-based lighting systems. SPIE Proceedings Vol. 10603: Photonics, Devices and Systems VII , 1060318-1-7 (2017)

M. Tröbs, S. Barke, T. Theeg, D. Kracht, G. Heinzel, K. Danzmann, Differential phase-noise properties of an Ytterbium-doped fiber amplifier for the Laser Interferometer Space Antenna. Optics Letters 3 (35), 435–437 (2010)

M. Hinkelmann, B. Schulz, D. Wandt, U. Morgner, M. Frede, J. Neumann, D. Kracht, Millijoule-level, kilohertz-rate, CPA-free linear amplifier for 2 µm ultrashort laser pulses. Optics Letters 23 (43), 5857–5860 (2018)

G. Pelegrina-Bonilla, K. Hausmann, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Analysis of the modal evolution in fused-type mode-selective fiber couplers. Optics Express 18 (23), 22977–22990 (2015)

B. N. Chichkov, U. Bünting, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Spatially dispersive regenerative amplification of ultrashort laser pulses. Optics Express 26 (17), 24075–24083 (2009)

H. Tünnermann, J. Neumann, D. Kracht, P. Weßels, All-fiber phase actuator based on an erbium-doped fiber amplifier for coherent beam combining at 1064 nm. Optics Letters 4 (36), 448–450 (2011)

M. Hinkelmann, D. Wandt, U. Morgner, J. Neumann, D. Kracht, High repetition rate, µJ-level, CPA-free ultrashort pulse multipass amplifier based on Ho:YLF. Optics Express 14 (26), 18125–18130 (2018)

O. Prochnow, A. Rühl, M. Schultz, D. Wandt, D. Kracht, All-fiber similariton laser at 1 µm without dispersion compensation. Optics Express 11 (15), 6889–6893 (2007)

B. N. Chichkov, K. Hausmann, D. Wandt, U. Morgner, J. Neumann, D. Kracht, 50 fs pulses from an all-normal dispersion erbium fiber oscillator. Optics Letters 18 (35), 3081–3083 (2010)

H. Tünnermann, O. Puncken, P. Weßels, M. Frede, J. Neumann, D. Kracht, Linearly polarized single-mode Nd:YAG oscillators using [100]- and [110]-cut crystals. Optics Express 14 (19), 12992–12999 (2011)

G. Hohenhoff, H. Meyer, P. Jäschke, T. Ripken, D. Kracht, S. Kaierle, Comparison of SLOT and µCT Investigation of 3D Printed Polymer Parts for Quality Assurance. Journal of Laser Applications 2 (32), \#LAM 1202 (2020)

O. Prochnow, R. Paschotta, E. Benkler, U. Morgner, D. Wandt, D. Kracht, J. Neumann, Quantum-limited noise performance of an ultrafast Yb all-fiber laser. Optics Express 18 (17), 15525–15533 (2009)

B. N. Chichkov, K. Hausmann, D. Wandt, U. Morgner, J. Neumann, D. Kracht, High-power dissipative solitons from an all-normal dispersion erbium fiber oscillator. Optics Letters 16 (35), 2807–2809 (2010)

H. Tünnermann, Y. Feng, J. Neumann, D. Kracht, P. Weßels, All-fiber coherent beam combining with phase stabilization via differential pump power control. Optics Letters 7 (37), 1202–1204 (2012)

R. Huß, R. Wilhelm, C. Kolleck, J. Neumann, D. Kracht, Suppression of parasitic oscillations in a core-doped ceramic Nd:YAG laser by Sm:YAG cladding. Optics Express 12 (18), 13094–13101 (2010)

O. Puncken, A. Tünnermann, J. J. Morehead, P. Weßels, M. Frede, J. Neumann, D. Kracht, Intrinsic reduction of the depolarization in Nd:YAG crystals. Optics Express 19 (18), 20461–20474 (2010)

B. N. Chichkov, C. Hapke, K. Hausmann, T. Theeg, D. Wandt, U. Morgner, J. Neumann, D. Kracht, 0.5 µJ pulses from a giant-chirp ytterbium fiber oscillator. Optics Express 4 (19), 3647–3650 (2011)

H. Tünnermann, J. Neumann, D. Kracht, P. Weßels, Frequency resolved analysis of the thermally induced refractive index changes in fiber amplifiers. Optics Letters 17 (37), 3597–3599 (2012)

H. Hundertmark, D. Kracht, D. Wandt, C. Fallnich, Ravi Kanth Kumar, V. V., A. K. George, J. C. Knight, P. St. J. Russel, Supercontinuum generation with 200 pJ laser pulses in an extruded SF6 fiber at 1560 nm. Optics Express 24 (11), 3196–3201 (2003)

O. Puncken, L. Winkelmann, M. Frede, P. Weßels, J. Neumann, D. Kracht, Heat generation in Nd:YAG at different doping levels. Applied Optics 31 (51), 7586–7590 (2012)

B. N. Chichkov, C. Hapke, J. Neumann, D. Kracht, D. Wandt, U. Morgner, Pulse duration and energy scaling of femtosecond all-normal dispersion fiber oscillators. Optics Express 4 (20), 3844–3852 (2012)

H. Tünnermann, J. Neumann, D. Kracht, P. Weßels, Gain dynamics and refractive index changes in fiber amplifiers: a frequency domain approach. Optics Express 12 (20), 13539–13550 (2012)

H. Hundertmark, D. Kracht, M. Engelbrecht, D. Wandt, C. Fallnich, Stable sub-85 fs passively mode-locked erbium-fiber oscillator with tunable repetition rate. Optics Express 5 (12), 3178–3183 (2004)

A. Rühl, H. Hundertmark, D. Wandt, C. Fallnich, D. Kracht, 0.7 W all-fiber Erbium oscillator generating 64 fs wave breaking-free pulses. Optics Express 16 (13), 6305–6309 (2005)

T. Denis, S. Hahn, S. Mebben, R. Wilhelm, C. Kolleck, J. Neumann, D. Kracht, Compact diode stack end pumped Nd:YAG amplifier using core doped ceramics. Applied Optics 5 (49), 811–816 (2010)

F. Völkermeyer, P. Jäschke, U. Stute, D. Kracht, Laser-based modification of wettablility for carbon fiber reinforced plastics. Applied Physics A - Materials Science & Processing 1 (112), 179–183 (2012)

P. Jäschke, M. Kern, U. Stute, D. Kracht, H. Haferkamp, Laser processing of continous carbon fibre reinforced polyphenylene sulfide organic sheets - correlation of process parameters and reduction in static tensile strength properties. Journal of Thermoplastic Composite Materials 3 (27), 324–337 (2014)

A. Rühl, O. Prochnow, D. Wandt, D. Kracht, B. Burgoyne, N. Godbout, S. Lacroix, Dynamics of parabolic pulses in an ultrafast fiber laser. Optics Letters 18 (31), 2734–2736 (2006)

O. de Varona Ortega, M. Steinke, D. Kracht, J. Neumann, P. Weßels, Influence of the third energy level on the gain dynamics of EDFAs: analytical model and experimental validation. Optics Express 22 (24), 24833–24895 (2016)

A. Wienke, F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Ultrafast, stretched-pulse thulium-doped fiber laser with a fiber-based dispersion management. Optics Letters 13 (37), 2466–2468 (2012)

S. Kanzelmeyer, H. Sayinc, T. Theeg, M. Frede, J. Neumann, D. Kracht, All-fiber based amplification of 40 ps pulses from a gain-switched laser diode. Optics Express 3 (19), 1854–1859 (2011)

A. Rühl, O. Prochnow, M. Engelbrecht, D. Wandt, D. Kracht, Similariton fiber laser with a hollow-core photonic bandgap fiber for dispersion control. Optics Letters 9 (32), 1084–1086 (2007)

O. de Varona Ortega, W. Fittkau, P. Booker, T. Theeg, M. Steinke, D. Kracht, J. Neumann, P. Weßels, Single-frequency fiber amplifier at 1.5 µm with 100 W in the linearly-polarized TEM00 mode for next-generation gravitational wave detectors. Optics Express 21 (25), 24880–24892 (2017)

A. Wienke, D. Wandt, U. Morgner, J. Neumann, D. Kracht, 700 MW peak power of a 380 fs regenerative amplifier with Tm:YAP. Optics Express 13 (23), 16884–16889 (2015)

M. Karow, C. Basu, D. Kracht, J. Neumann, P. Weßels, TEM00 mode content of a two stage singlefrequency Yb-doped PCF MOPA with 246 W of output power. Optics Express 5 (20), 5319–5324 (2012)

A. Rühl, O. Prochnow, M. Schultz, D. Wandt, D. Kracht, Impact of third-order dispersion on the generation of wave breaking-free pulses in ultrafast fiber lasers. Optics Letters 18 (32), 2590–2592 (2007)

S. Dudziak, M. Gieseke, H. Haferkamp, S. Barcikowski, D. Kracht, Functionality of Laser-Sintered Shape Memory Micro-Actuators. Physics Procedia (5, Teil B), 607–615 (2010)

A. Wienke, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Comparison between Tm:YAP and Ho:YAG ultrashort pulse regenerative amplification. Optics Express 8 (24), 8632–8640 (2016)

M. Karow, J. Neumann, D. Kracht, P. Weßels, Impact of amplified spontaneous emission on Brillouin scattering of a single-frequency signal. Optics Express 10 (20), 10572–10582 (2012)

A. Rühl, V. Kuhn, D. Wandt, D. Kracht, Normal dispersion erbium-doped fiber laser with pulse energies above 10 nJ. Optics Express 5 (16), 3130–3135 (2008)

K. Ehret, M. Frede, S. Ghazaryan, M. Hildebrandt, E.-A. Knabbe, D. Kracht, A. Lindner, J. List, T. Meier, N. Meyer, D. Notz, J. Redondo, A. Ringwald, G. Wiedemann, B. Willke, Resonant laser power build-up in ALPS - A \textquotedbllight shining through a wall\textquotedbl experiment. Nuclear Instruments & Methods in Physics Research Section A - Accelerators, Spectrometers, Detectors and Associated Equipment 1 (612), 83–96 (2009)

R. Wilhelm, M. Frede, D. Kracht, Power Scaling of End-Pumped Solid-State Rod Lasers by Longitudinal Dopant Concentration Gradients. IEEE Journal of Quantum Electronics 3 (44), 232–244 (2008)

M. Karow, H. Tünnermann, J. Neumann, D. Kracht, P. Weßels, Beam quality degradation of a single-frequency Yb-doped photonic crystal fiber amplifier with low mode instability threshold power. Optics Letters 20 (37), 4242–4244 (2012)

A. Rühl, D. Wandt, U. Morgner, D. Kracht, On wave-breaking free fiber lasers mode-locked with two saturable absorber mechanisms. Optics Express 11 (16), 8181–8189 (2008)

K. Ehret, M. Frede, S. Ghazaryan, M. Hildebrandt, E.-A. Knabbe, D. Kracht, A. Lindner, J. List, T. Meier, N. Meyer, D. Notz, J. Redondo, A. Ringwald, G. Wiedemann, B. Willke, New ALPS Results on Hidden-Sector Lightweights. Physics Letters B 4-5 (689), 149–155 (2010)

R. Wilhelm, D. Freiburg, M. Frede, D. Kracht, End-pumped Nd:YAG laser with a longitudinal hyperbolic dopant concentration profile. Optics Express 24 (16), 20106–20116 (2008)

A. Kornfeld, N. Bärsch, D. Kracht, A. Ostendorf, Integrated optical micro structures for signal processing in the position metrology. Microsystem Technologies 12 (14), 1955–1960 (2008)

A. Rühl, D. Wandt, U. Morgner, D. Kracht, Normal dispersive ultrafast fiber oscillators. IEEE Journal of Selected Topics in Quantum Electronics 1 (15), 170–181 (2009)

M. Engelbrecht, A. Rühl, D. Wandt, D. Kracht, Single-Frequency ytterbium-doped fiber laser with 26 nm tuning range. Optics Express 8 (15), 4617–4622 (2007)

R. Wilhelm, D. Freiburg, M. Frede, D. Kracht, C. Fallnich, Design and comparison of composite rod crystals for power scaling of diode end-pumped Nd:YAG lasers. Optics Express 10 (17), 8229–8236 (2009)

D. Kracht, M. Frede, R. Wilhelm, C. Fallnich, Comparison of crystalline and ceramic composite Nd:YAG for high power diode end-pumping. Optics Express 16 (13), 6212–6216 (2005)

H. Sayinc, U. Bünting, J. Neumann, D. Wandt, D. Kracht, Ultrafast high power Yb:KLuW regenerative amplifier. Optics Express 17 (17), 15068–15071 (2009)

M. Engelbrecht, D. Wandt, D. Kracht, Tunable, µs-pulsed ytterbium fiber laser system with a linewidth below 2.7 GHz. Optics Communications 1 (279), 173–176 (2007)

B. Willke, K. Danzmann, C. Fallnich, M. Frede, M. Heurs, P. King, D. Kracht, P. Kwee, R. L. Savage, F. Seifert, R. Wilhelm, Stabilized high power laser for advanced gravitational wave detectors. Journal of Physics: Conference Series (32), 270–275 (2006)

D. Kracht, R. Wilhelm, M. Frede, K. Dupré, L. Ackermann, 407 W End-pumped Multi-segmented Nd:YAG Laser. Optics Express 25 (13), 10140–10144 (2005)

H. Sayinc, D. Mortag, D. Wandt, J. Neumann, D. Kracht, Sub-100 fs pulses from a low repetition rate Yb-doped fiber laser. Optics Express 7 (17), 5731–5735 (2009)

M. Engelbrecht, F. Haxsen, A. Rühl, D. Wandt, D. Kracht, Ultrafast thulium-doped fiber-oscillator with pulse energy of 4.3 nJ. Optics Letters 7 (33), 690–692 (2008)

B. Willke, K. Danzmann, M. Frede, P. King, D. Kracht, P. Kwee, O. Puncken, R. L. Savage, B. Schulz, F. Seifert, C. Veltkamp, S. Wagner, P. Weßels, L. Winkelmann, Stabilized lasers for advanced gravitational wave detectors. Classical and Quantum Gravity (25), 114040 ff (2008)

D. Kracht, R. Wilhelm, M. Frede, C. Fallnich, F. Seifert, B. Willke, K. Danzmann, Core-doped Ceramic Nd:YAG Laser. Optics Express 7 (14), 2690–2694 (2006)

H. Sayinc, K. Hausmann, U. Morgner, J. Neumann, D. Kracht, Picosecond all-fiber cascaded Raman shifter pumped by an amplified gain switched laser diode. Optics Express 27 (19), 25918–25924 (2011)

M. Engelbrecht, F. Haxsen, D. Wandt, D. Kracht, Wavelength resolved intracavity measurement of the cross sections of a Tm-doped fiber. Optics Express 3 (16), 1610–1615 (2008)

L. Winkelmann, O. Puncken, R. Kluzik, C. Veltkamp, P. Kwee, J. Poeld, C. Bogan, B. Willke, M. Frede, J. Neumann, P. Weßels, D. Kracht, Injection-locked single-frequency laser with an output power of 220 W. Applied Physics B - Lasers and Optics 3 (102), 529–538 (2011)

D. Kracht, U. Morgner, M. Schultz, D. Wandt, H. Karow, Ytterbium femtosecond fiber laser without dispersion compensation tunable from 1015 nm to 1050 nm. Optics Communications 13 (282), 2567–2570 (2009)

H. Sayinc, M. Wysmolek, M. Zajnulina, J. M. Chavez Boggio, R. Haynes, M. M. Roth, U. Morgner, J. Neumann, D. Kracht, Broadband Cascaded Four-Wave Mixing Generation in a Photonic Crystal Fiber at 1 µm. Applied Physics B - Lasers and Optics 3 (110), 299–302 (2013)

F. Wellmann, M. Steinke, F. Meylahn, N. Bode, B. Willke, L. Overmeyer, J. Neumann, D. Kracht, High power, single-frequency, monolithic fiber amplifier for the next generation of gravitational wave detectors. Optics Express 20 (27), 28523–28533 (2019)

M. Wysmolek, O. Ottenhues, T. Pulzer, T. Theeg, H. Sayinc, M. Steinke, U. Morgner, J. Neumann, D. Kracht, Microstructured fiber cladding light stripper for kilowatt-class laser systems. Appl. Optics 23 (57), 6640–6644 (2018)

Zeitschriftenaufsätze (non-reviewed)

J. Neumann, A. Büttner, M. Ernst, M. Hunnekuhl, R. Kalms, L. Willemsen, P. Weßels, D. Kracht, Development of a Space-Qualified Pulsed Ultraviolet Laser for the Mars Organic Molecule Analyzer (MOMA) on the ExoMars 2020 Rover. Laser Congress 2019 (ASSL, LAC, LS&C), OSA Technical Digest (Optical Society of America, 2019) , ATh4A.5 (2019)

O. de Varona Ortega, M. Steinke, D. Kracht, J. Neumann, P. Weßels, Single-frequency and single-mode fiber amplifier at 1.5-µm core-pumped at 1018 nm. SPIE Proceedings Vol. 10512: Fiber Lasers XV: Technology and Systems , 105120K (2018)

G. Pelegrina-Bonilla, K. Hausmann, K. Liu, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Asymmetric fused fiber coupler consisting of different single-mode glass fibers. Photonik International , 48–50 (2012)

G. Pelegrina-Bonilla, K. Hausmann, K. Liu, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Asymmetrische Faserkoppler aus unterschiedlichen Singlemode-Glasfasern. Photonik 3 (44), 54–56 (2012)

O. Puncken, D. C. Kirsch, A. Wienke, D. Wandt, J. Neumann, D. Kracht, An ultrafast Thulium laser with fundamental soliton emission at 1750 nm. Proc. Conference on Lasers and the Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe - EQEC 2017) , CJ-13.1 (2017)

A. Ramzy, R. Dickhaut-Koop, P. Jäschke, D. Meiners, D. Kracht, A. S. Herrmann, G. Ziegmann, Mit höchster Präzision - Ein neues Recyclingverfahren für trockene Kohlenstofffaserabfälle ermöglicht die Herstellung von umformungsfähigen Organofolien. ReSource 1, 32–35 (2014)

P. C. Repgen, U. Morgner, A. Tajalli, D. Wandt, J. Neumann, D. Kracht, Complete characterization of ultrafast pulses of an Yb-doped fiber amplifier via dispersion scans after compression in a grism compressor. SPIE Proceedings Vol. 10512: Fiber Lasers XV: Technology and Systems , 1051213 (2018)

P. C. Repgen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, High-energy ultrafast Yb-fiber laser system based on a Mamyshev regenerator. Proc. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC) , cj_7_2 (2019)

A. Rühl, D. Wandt, U. Morgner, D. Kracht, Normal-Dispersive Ultrafast Fiber Oscillators. Journal of LATEX Class Files 1 (6), 1–12 (2008)

S. Schlangen, K. Bremer, Y. Zheng, A. Isaak, M. Wurz, S. Böhm, F. Wellmann, M. Steinke, G. Pelegrina-Bonilla, J. Neumann, D. Kracht, B. Roth, L. Overmeyer, Manufacturing and characterization of asymmetric evanescent field polished fiber couplers for fiber grating assisted mode selective coupling. SPIE Proceedings Vol. 10681: Micro-Structured and Specialty Optical Fibres V , 1068116 (2018)

P. Booker, M. Dürbeck, N. G. Boetti, D. Pugliese, S. Abrate, D. Milanese, M. Steinke, J. Neumann, D. Kracht, Single-frequency Er3+ doped phosphate fiber MOPA. Proc. Conference on Lasers and Electro-Optics & European Quantum Electronics Conference (CLEO®/Europe-EQEC 2019) , cj_p_17 (2019)

S. Spelthann, J. Thiem, L. Neumann, H.-H. Johannes, W. Kowalsky, D. Kracht, J. Neumann, A. Rühl, D. Ristau, Fluorescence Dynamics of Laseractive Nanocrystals Emitting in the Visible. Proc. Conference on Lasers and Electro-Optics & European Quantum Electronics Conference (CLEO®/Europe-EQEC 2019) , cj_p_37 (2019)

A. Büttner, M. Ernst, M. Hunnekuhl, R. Kalms, L. Willemsen, P. Weßels, D. Kracht, J. Neumann, the MOMA laser team, Optical design and characterization of the MOMA laser head flight model for the ExoMars 2020 mission. International Conference on Space Optics (ICSO) (2018)

M. Steinke, T. Theeg, M. Wysmolek, C. Ottenhues, T. Pulzer, J. Neumann, D. Kracht, CO2 laser radiation as a versatile tool for the fabrication of fiber-based components. Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF) , SoW3H.5 (Gespeichert)

M. Steinke, S. Böhm, K. Hausmann, M. Wysmolek, F. Wellmann, G. Pelegrina Bonilla, S. Schlangen, K. Bremer, B. Roth, L. Overmeyer, J. Neumann, D. Kracht, Development of a reliable fabrication process of evanescent field coupled fused fiber couplers (Conference Presentation). SPIE Proceedings Vol. 10683: Fiber Lasers and Glass Photonics: Materials through Applications , 106831L (2018)

A. Büttner, M. Ernst, M. Hunnekuhl, R. Kalms, L. Willemsen, P. Weßels, D. Kracht, J. Neumann, the MOMA laser team, Optical design and characterization of the MOMA laser head flight model for the ExoMars 2020 mission. SPIE Proceedings Vol. 11180: International Conference on Space Optics , 111805H (2019)

M. Steinke, T. Theeg, M. Wysmolek, C. Ottenhues, T. Pulzer, J. Neumann, D. Kracht, Fabrication of versatile cladding light strippers and fiber end-caps with CO2 laser radiation. SPIE Proceedings Vol. 10513: Components and Packaging for Laser Systems IV (2018), 105131P (Gespeichert)

E. Chatzizyrli, N. Tinne, R. Lachmayer, J. Neumann, D. Kracht, Multiphysics simulation strategy for the optimization of laser-excited remote phosphor systems. DGaO-Proceedings (2018), P50 (2018)

T. Theeg, C. Ottenhues, H. Sayinc, J. Neumann, D. Kracht, Promising single-frequency laser for next-generation gravitational wave detectors. (2016)

E. Chatzizyrli, N. Tinne, R. Lachmayer, J. Neumann, D. Kracht, Opto-thermal simulation model for optimizing laser-excited remote phosphor systems. SPIE Proceedings Vol. 10693: Illumination Optics V , 106930O-1 - 106930O-9 (2018)

K. Kiedrowski, J. Thiem, F. Jakobs, J. Kielhorn, I. Balasa, D. Kracht, D. Ristau, Determination of the laser-induced damage threshold of polymer optical fibers. SPIE Proceedings Vol. 10805: Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference 10805, 108052C (2018)

E. Chatzizyrli, A. Wienke, R. Lachmayer, J. Neumann, D. Kracht, Structured Auxiliary Mesh (SAM) algorithm for opto-thermal simulation of laser-based lighting systems. Proc. Conference on Lasers and Electro-Optics & European Quantum Electronics Conference (CLEO®/Europe-EQEC 2019) , ej_p_11 (2019)

J. Thiem, S. Spelthann, L. Neumann, H.-H. Johannes, W. Kowalsky, D. Kracht, J. Neumann, A. Rühl, D. Ristau, Design and optimization of laseractive nanoparticles for fiber lasers. Proc. Conference on Lasers and Electro-Optics & European Quantum Electronics Conference (CLEO®/Europe-EQEC 2019) , cj_p_69 (2019)

H. Dittmar, P. Jäschke, U. Stute, D. Kracht, Reparatur kohlenstofffaserverstärkter Kunststoffe - Ein neuer Ansatz durch laserbasierte Verfahren. Ingenieurspiegel 1, 44–45 (2012)

P. Weßels, A. Büttner, M. Ernst, M. Hunnekuhl, R. Kalms, L. Willemsen, D. Kracht, J. Neumann, the MOMA laser team, UV-DPSS Laser Flight Model for the MOMA Instrument of the ExoMars 2020 Mission. SPIE Proceedings Vol. 11180: International Conference on Space Optics (ICSO) , 111801B (2019)

P. Dültgen, H. Brand, D. Kracht, C. Stahlhut, Laserlöten von Sägeblättern. Verbesserung der Fertigungsqualität von Kreissägeblättern durch Laserlöten der Hartmetallschneiden. wt Werkstattstechnik online 5 (99), 359–361 (2009)

F. Wellmann, P. Booker, S. Hochheim, M. Steinke, P. Weßels, J. Neumann, D. Kracht, O. De Varona, W. Fittkau, T. Theeg, L. Overmeyer, Recent progress on monolithic fiber amplifiers for next generation of gravitational wave detectors. SPIE Proceedings Vol. 10512: Fiber Lasers XV: Technology and Systems , 105120I (2018)

M. Ernst, A. Büttner, M. Hunnekuhl, R. Kalms, P. Weßels, L. Willemsen, J. Neumann, D. Kracht, the MOMA laser team, Mechanical Design and Testing of the MOMA Flight Model Laser Head for the EXOMARS 2020 Mission. SPIE Proceedings Vol. 11180: International Conference on Space Optics , 111805J (2019)

F. Wellmann, M. Steinke, F. Thies, N. Bode, P. Oppermann, B. Willke, L. Overmeyer, J. Neumann, D. Kracht, Characterization of the Monolithic Fiber Amplifier Engineering Prototype for the Next Generation of Gravitational Wave Detectors. SPIE Proceedings Vol. 10897: Fiber Lasers XVI: Technology and Systems , 1089722 (2019)

F. Kranert, K. Rettschlag, A. Wienke, A. Hohnholz, J. Neumann, P. Jäschke, D. Kracht, R. Lachmayer, Generation of functional curved waveguides by CO2-laser based deposition of coreless fused silica fibers. 3D Printed Optics and Additive Photonic Manufacturing II , 1134909 (2020)

M. Wysmolek, M. Steinke, J. Neumann, D. Kracht, Versatile monolithic 2-micron laser systems. SPIE Proceedings Vol. 10512: Fiber Lasers XV: Technology and Systems , 1051224 (Gespeichert)

F. Wellmann, M. Steinke, F. Meylahn, N. Bode, B. Willke, L. Overmeyer, P. Weßels, J. Neumann, D. Kracht, Low-noise, single-frequency 200 W fiber amplifier. SPIE Proceedings Vol. 11260: Fiber Lasers XVII: Technology and Systems , 1126013 (2020)

H. Haferkamp, D. Kracht, D. Herzog, P. Kallage, K. Harley, Induktiv gestütztes Laserstrahlschweißen. wt Werkstattstechnik online 6 (99), 371–375 (2009)

M. Hinkelmann, D. Wandt, J. Neumann, D. Kracht, U. Morgner, Ultrashort pulse CPA-free Ho:YLF linear amplifier. SPIE Proceedings Vol. 10511: Solid State Lasers XXVII: Technology and Devices , 1051109 (2018)

M. Hinkelmann, B. Schulz, D. Wandt, U. Morgner, M. Frede, J. Neumann, D. Kracht, CPA-free amplification of sub-10 ps pulses in Ho:YLF to the mJ-level at 2 µm wavelength. SPIE Proceedings Vol. 10896: Solid State Lasers XXVIII: Technology and Devices , 108960Q (2019)

M. Hinkelmann, D. Wandt, U. Morgner, J. Neumann, K. Zawilski, P. Schunemann, D. Kracht, High repetition rate, wavelength-tunable mid-IR source driven by ps-pulses from a Ho:YLF amplifier at 2 µm. Proc. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC) , ca_9_6 (2019)

S. Hochheim, F. Wellmann, T. Theeg, O. de Varona Ortega, P. Booker, P. Weßels, M. Steinke, J. Neumann, D. Kracht, Monolithic fiber amplifiers for the next generation of gravitational wave detectors. SPIE Proceedings Vol. 10683: Fiber Lasers and Glass Photonics: Materials through Applications (2018), 1068320 (Gespeichert)

S. Hochheim, M. Steinke, J. Neumann, D. Kracht, Broadband excess intensity noise due to an asymmetric Brillouin gain spectrum in optical fibers. SPIE Proceedings Vol. 10897: Fiber Lasers XVI: Technology and Systems , 108971R (2019)

S. Hochheim, M. Steinke, J. Koponen, T. Lowder, S. Novotny, J. Neumann, D. Kracht, Monolithic amplifier based on a Chirally-coupled-core fiber. Proc. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC 2019) , cj_p_19 (2019)

S. Iakushev, M. Steinke, D. Kracht, J. Neumann, P. Weßels, Development of a comprehensive 3D model for transversal mode instability investigations. SPIE Proceedings Vol. 10683: Fiber Lasers and Glass Photonics: Materials through Applications , 1068337-1 - 1068337-8 (2018)

K. Kiedrowski, F. Jakobs, J. Kielhorn, H.-H. Johannes, W. Kowalsky, D. Kracht, I. Balasa, D. Ristau, Laser-induced degradation and damage morphology in polymer optical fiber. Proceedings of SPIE Vol. 11355: Micro-Structured and Specialty Optical Fibers VI , 1135504 (2020)

R. Kalms, A. Büttner, M. Ernst, M. Hunnekuhl, L. Willemsen, P. Weßels, D. Kracht, J. Neumann, the MOMA laser team, Opto-mechanical design and verification of the MOMA UV laser source for the ExoMars 2020 mission. SPIE Proceedings Vol. 10896: Solid State Lasers XXVIII: Technology and Devices 10896, 108961Y (2019)

K. Kiedrowski, I. Balasa, D. Kracht, D. Ristau, Bestimmung optischer Eigenschaften von Werkstoffen zur Herstellung passiver und aktiver polymeroptischer Faserkomponenten. DGaO-Proceedings (2018)

Konferenzbeiträge

M. Schimek, D. Herzog, D. Kracht, H. Haferkamp, Local Effects of Bead-on-Plate and Overlap Welding Seams to increase Strength and Rigidity of Sheet Metal Constructions. Conference on Lasers in Manufacturing (LiM)15.-18. Juni, München , 27-32 (2009)

S. Yilmaz, C. Ottenhues, T. Theeg, S. Lamrini, K. Scholle, K. Schäfer, P. Fuhrberg, H. Sayinc, F. O. Ilday, J. Neumann, L. Overmeyer, D. Kracht, Single-frequency lasers for gravitational wave detection. SPIE Photonics West: LASE13.-18. Februar, San Francisco (2016)

J. M. Chavez Boggio, T. Fremberg, D. Bodenmüller, M. Böhm, M. Wysmolek, H. Sayinc, H. Fernando, J. Neumann, D. Kracht, R. Haynes, M. M. Roth, Astronomical optical frequency comb generation in nonlinear fibres and ring resonators: optimization studies. SPIE Astronomical Telescopes + Instrumentation1.-6. Juli, Amsterdam , 01H (2012)

D. Kracht, High-power single-mode cw lasers for gravitational wave detection. EPS-QEOD Europhoton Conference21.-26. August, Wien (2016)

T. Theeg, H. Sayinc, P. Kwee, B. Willke, P. Weßels, J. Neumann, D. Kracht, 300 W all-fiber counter-pumped single-frequency amplifier system. Einstein Telescope Symposium (ET Symposium)19.-20. November, Lyon (2014)

C. Gaida, M. Gebhardt, F. Stutzki, F. Jansen, A. Wienke, U. Zeitner, F. Fuchs, C. Jauregui, D. Wandt, D. Kracht, J. Limpert, A. Tünnermann, Tm-doped fiber CPA system with 152W average power an sub-700fs pulse duration. Advanced Solid-State Lasers (ASSL)16.-21. November, Shanghai , AW4A.4 (2014)

G. Pelegrina-Bonilla, K. Hausmann, K. Liu, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Asymmetric single-mode fused fiber coupler for core pumping thulium-doped fiber at 795 nm. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources26.-31. August, Stockholm , FrB.7 (2012)

J. Neumann, T. Lang, R. Huß, M. Ernst, A. Moalem, C. Kolleck, D. Kracht, Development of a Pulsed Laser System for Laser-induced Breakdown Spectroscopy (LIBS). International Conference on Space Optics (ICSO)9.-12. Oktober, Ajaccio (2012)

P. Weßels, M. Karow, V. Kuhn, M. Steinke, H. Tünnermann, D. Kracht, J. Neumann, Fiber amplifiers for gravitational wave detection. Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)1.-4. Juli, Kyoto , MA1-1 (2013)

S. Iakushev, M. Steinke, D. Kracht, J. Neumann, P. Weßels, Development of a comprehensive 3D model for transversal mode instability investigations. SPIE Photonics Europe22.-26. April, Straßburg (2018)

M. Schimek, M. Hustedt, S. Kaierle, D. Kracht, Stahl-Aluminium-Überlappverbindungen mit hohen Festigkeiten durch das Laserstrahlschweißen mit der spektroskopischen Einschweißtiefenkontrolle. DVS Congress17.-18. September, Düsseldorf , 316-322 (2012)

S. Yilmaz, H. Sayinc, F. O. Ilday, J. Neumann, D. Kracht, Intracavity Dissipative Four-Wave Mixing at Different Dispersion Regimes of an Ultrafast Fiber Laser. Frontiers in Optics17.-21. Oktober, Rochester (2016)

J. M. Chavez Boggio, A. A. Rieznik, M. Zajnulina, M. Böhm, D. Bodenmüller, M. Wysmolek, H. Sayinc, J. Neumann, D. Kracht, R. Haynes, M. M. Roth, Generation of an astronomical optical frequency comb in three fibre-based nonlinear stages. SPIE Photonics Europe: Nonlinear Optics and its Applications16.-18. April, Brüssel , 84340Y (2012)

D. Kracht, S. Hahn, R. Huß, J. Neumann, R. Wilhelm, M. Frede, P. Peuser, High Efficiency, Passively Q-Switched Nd:YAG MOPA for Spaceborne Laser-Altimetry. SPIE Photonics West: LASE21.-26. Januar, San Jose , 6100-71 (2006)

T. Theeg, H. Sayinc, J. Neumann, D. Kracht, 300 W all-fiber counter-pumped single-frequency amplifier stage. SPIE Photonics West: LASE2.-7. Februar, San Francisco , 8601-30 (2013)

C. Gaida, F. Stutzki, M. Gebhardt, F. Jansen, A. Wienke, U. Zeitner, F. Fuchs, C. Jauregui, D. Wandt, D. Kracht, J. Limpert, A. Tünnermann, Sub-700fs pulses at 152 W average power from a Tm-doped fiber CPA system. SPIE Photonics West: LASE7.-12. Februar, San Francisco , 93441K (2015)

G. Pelegrina-Bonilla, K. Hausmann, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Modal Analysis in Fused-Type Mode-Selective Fiber Couplers. Advanced Photonics27.-31. Juli, Barcelona , SoW2B.3 (2014)

F. Otte, S. Pamin, J. Hermsdorf, D. Kracht, R. Kling, Enhancement of Process Stability for Laser Spot Micro Welding by using 532 nm Radiation. International Congress on Laser Advanced Materials Processing (LAMP)29. Juni-2. Juli, Kobe , No. 105 (2009)

P. Weßels, J. Neumann, D. Kracht, Single-frequency lasers for gravitational wave detection. Advanced Solid State Lasers (ASSL)30. Oktober-3. November, Boston (2016)

P. Jahn, H. Tünnermann, D. Kracht, J. Neumann, P. Weßels, Analyse von Modulationsseitenbändern mit einem Mach-Zehnder-Interferometer. DPG Frühjahrstagung der Sektion AMOP18.-22. März, Hannover , Q 44.6 (2013)

P. Jäschke, U. Stute, D. Kracht, H. Haferkamp, Innovations in high-power laser processing of thermoplastic composites. SAMPE TECH22.-25. Oktober, Charleston (2012)

M. Schimek, D. Kracht, V. Wesling, Lokale Effekte von Schweißnähten bei laserbasierten Fügekonzepten für hochfeste lastübertragende Strukturmodule - Abschlußkolloquium SFB 675. Industriekolloquium, Abschlusskolloquium SFB 6752.-3. November, Clausthal-Zellerfeld , 111-120 (2011)

S. Yilmaz, O. Isik, C. Ottenhues, K. Hausmann, H. Sayinc, F. O. Ilday, J. Neumann, D. Kracht, Dual wavelength pumping scheme for resonantly core-pumped Holmium doped fiber lasers. SPIE Photonics West: LASE28. Januar - 02. Februar, San Francisco (2017)

J. M. Chavez Boggio, A. A. Rieznik, M. Wysmolek, H. Sayinc, J. Neumann, D. Kracht, R. Haynes, M. M. Roth, Investigation of nonlinear spectral broadening in a ring resonator. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources26.-31. August, Stockholm , TuP.34 (2012)

D. Kracht, M. Frede, D. Freiburg, R. Wilhelm, C. Fallnich, High-power core-doped ceramic Nd:YAG laser. Conference on Lasers and Electro-Optics (CLEO)22.-27. Mai, Baltimore , 1082-1084 (2005)

T. Theeg, H. Sayinc, L. Overmeyer, J. Neumann, D. Kracht, Manufacturing and optical characterization of side-pumped high power fiber combiner for LMA-fibers. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)21.-25. Juni, München , CE_2_4 (2015)

M. Gieseke, S. Dudziak, E. Demirci, M. Huse, D. Herzog, D. Kracht, Steuerung einer Mikrolasersinteranlage zur Generierung von Mikrobauteilen aus einer Nickel-Titan-Formgedächtnislegierung. Virtuelle Instrumente in der Praxis (VIP)27.-28. Oktober, Fürstenfeldbruck , 217-220 (2010)

G. Pelegrina-Bonilla, K. Hausmann, H. Tünnermann, P. Weßels, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Modal Decomposition in Asymmetric Wavelength-Selective Fused Fiber Couplers. Advanced Photonics27.-31. Juli, Barcelona , JM5A.6 (2014)

C. Ottenhues, T. Theeg, K. Hausmann, H. Sayinc, J. Neumann, D. Kracht, Single mode fused fiber couplers for high power lasers and amplifiers. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)21.-25. Juni, München , CJ_P_42 (2015)

P. Weßels, H. Karow, S. Kuhn, T. Steinke, A. Tünnermann, D. Kracht, J. Neumann, Single-frequency fiber amplifiers for gravitational wave detection. Conference on Lasers and Electro-Optics (CLEO)9.-14. Juni, San Jose , CW3M.5 (2013)

P. Jäschke, F. Fischer, M. Kern, U. Stute, D. Kracht, Laser cutting of Cetex® thermoplastic composites using high-power multimode fibre laser. SAMPE23.-26. Mai, Long Beach (2011)

M. Schimek, D. Herzog, D. Kracht, H. Haferkamp, Investigations of local effects of bead-on-plate and overlap welding seams to increase rigidity and strength steels. Beam Technologies and Laser Application23.-25. September, St. Petersburg , 304-310 (2009)

S. Yilmaz, C. Ottenhues, M. Wysmolek, T. Theeg, S. Lamrini, C. Scholle, P. Fuhrberg, H. Sayinc, F. O. Ilday, J. Neumann, L. Overmeyer, D. Kracht, All-Fiber, Single-Mode Spectral Beam Combining of High Power Tm-Doped Fiber Lasers. Advanced Solid-State Lasers (ASSL)4.-9. Oktober, Berlin , AW4A.4 (2015)

B. N. Chichkov, C. Hapke, K. Hausmann, T. Theeg, D. Wandt, U. Morgner, D. Kracht, J. Neumann, 0.5 µJ femtosecond pulses from a giant-chirp ytterbium fiber oscillator. Advanced Solid-State Photonics (ASSP)13.-16. Februar, Istanbul , AMB12 (2011)

D. Kracht, C. Kolleck, J. Neumann, Frequency Quadrupled Passively Q-switched Laser for Planetary Exploration by Laser Desorption Mass Spectrometry. Laser Ignition Conference (LIC)23.-25. April, Yokohama , LIC 6-4 (2013)

T. Theeg, K. Hausmann, G. Pelegrina-Bonilla, H. Sayinc, J. Neumann, D. Kracht, High power single mode optical fiber coupler with enhanced mode field diameter. SPIE Photonics West: LASE21.-26. Januar, San Francisco , 8237-89 (2012)

S. Hahn, R. Huß, J. Neumann, R. Wilhelm, M. Frede, D. Kracht, Kompakter passiv gütegeschalteter Nd:YAG MOPA für weltraumgestützte Laseraltimetrie. DPG Frühjahrstagung der Sektion AMOP13.-17. März, Frankfurt am Main (2006)

X. Peng, B. W. Baird, W. Ren, D. M. Hemenway, L. Xu, P. Deladurantaye, Y. Taillon, M. Frede, D. Kracht, 355 nm Tailored Pulse Tandem Amplifier. Advanced Solid-State Photonics (ASSP)27.-30. Januar, Nara , MC35 (2008)

C. Ottenhues, T. Theeg, K. Hausmann, M. Wysmolek, H. Sayinc, J. Neumann, D. Kracht, Monolithic Ytterbium-doped high power single mode fibre laser at a wavelength of 1018nm. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources24.-29. August, Neuchâtel , ThP-T1-P-10 (2014)

F. Wellmann, M. Steinke, F. Thies, N. Bode, P. Oppermann, B. Willke, L. Overmeyer, J. Neumann, D. Kracht, Characterization of the Monolithic Fiber Amplifier Engineering Prototype for the Next Generation of Gravitational Wave Detectors. SPIE Photonics West: LASE02.-07. Februar, San Francisco (2019)

P. Jäschke, S. Blümel, S. Bastick, U. Stute, D. Kracht, Evaluation of cutting edge characteristics during laser processing of continuous carbon fibre reinforced composites. International Symposium on Laser Processing for CFRP and Composite Materials (LPCC)26.-27. April, Yokohama , LPCC-4-1 (2012)

M. Schimek, D. Herzog, D. Kracht, H. Haferkamp, Nutzung lokaler Effekte von Schweißnähten bei laserbasierten Fügekonzepten für hochfeste lastübertragende Strukturmodule. Industriekolloquium SFB 67525.-26. November, Clausthal-Zellerfeld , 179-186 (2009)

N. B. Chichkov, U. Bünting, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Diode-pumped spatially dispersive Yb:KYW regenerative amplifier. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)14.-19. Juni, München , CA4.2 (2009)

D. Kracht, C. Kolleck, J. Neumann, Passively Q-switched lasers for spaceborne applications. EOS Topical Meeting on Lasers (ETML)26.-28. September, Capri (2011)

T. Theeg, H. Sayinc, J. Neumann, D. Kracht, Advanced fiber combiner capable of 400-W CW operation for the realization of monolithic counter-propagating pumped high power fiber amplifiers. SPIE Photonics West: LASE21.-26. Januar, San Francisco , 8237-55 (2012)

S. Hahn, R. Huß, J. Neumann, R. Wilhelm, M. Frede, D. Kracht, P. Peuser, Compact, high efficiency, passively Q-switched Nd:YAG MOPA for spaceborne laser-altimetry. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, Incline Village (2006)

R. Pfeifer, P. Kallage, S. Barcikowski, D. Kracht, V. Wesling, C. von der Haar, Laserstrahlschweißen von Mischverbindungen aus Stahl und Aluminium. Nano und Material Symposium Niedersachsen16.-17. November, Salzgitter (2011)

C. Ottenhues, T. Theeg, K. Hausmann, M. Wysmolek, H. Sayinc, J. Neumann, D. Kracht, 200 W Single Mode Monolithic Fibre Laser at a Wavelength of 1018 nm. SPIE Photonics West: LASE7.-12. Februar, San Francisco , 9344-54 (2015)

F. Wellmann, P. Booker, S. Hochheim, M. Steinke, P. Weßels, J. Neumann, D. Kracht, O. De Varona, W. Fittkau, T. Theeg, L. Overmeyer, Recent progress on monolithic fiber amplifiers for next generation of gravitational wave detectors. SPIE Photonics West: LASE27. Januar - 01. Februar, San Francisco (2018)

P. Jäschke, U. Stute, D. Kracht, Influence of Process Strategy and Composite Reinforcements on Weld Seam Characteristics during Laser Welding of CF-PPS and CF-PA66. International Symposium on Laser Processing for CFRP and Composite Materials (LPCC)26.-27. April, Yokohama (2013)

B. N. Chichkov, C. Hapke, K. Hausmann, T. Theeg, D. Wandt, U. Morgner, D. Kracht, J. Neumann, 0.5 µJ femtosecond pulses from a giant-chirp ytterbium fiber oscillator. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)22.-26. Mai, München , CJ5.4 (2011)

D. Kracht, R. Wilhelm, M. Frede, C. Fallnich, F. Seifert, B. Willke, K. Danzmann, High Power Single-Frequency Laser for Gravitational Wave Detection. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, Incline Village , WE1 1-3 (2006)

T. Theeg, K. Hausmann, M. Frede, H. Sayinc, J. Neumann, D. Kracht, High power fused single mode optical fiber coupler. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)22.-26. Mai, München , CJ2.1 (2011)

S. Hahn, M. Frede, J. Neumann, D. Kracht, High Power, Multi-Segmented Nd:YAG Laser, Longitudinally Pumped at 885 nm. Conference on Lasers and Electro-Optics (CLEO) and the International Quantum Electronics Conference (IQEC)31. Mai-5. Juni, Baltimore , CThR3 (2009)

O. Prochnow, R. Paschotta, E. Benkler, U. Morgner, D. Wandt, D. Kracht, J. Neumann, Quantum-limited noise performance of an ultrafast Yb all-fiber laser. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)14.-19. Juni, München , CF2.4 (2009)

R. Paschotta, O. Prochnow, D. Wandt, U. Morgner, D. Kracht, Timing Jitter of Mode-Locked Fiber Lasers. Advanced Solid-State Photonics (ASSP)1.-4. Februar, Denver , MB16 (2009)

Y. Wessarges, C. Hoff, J. Hermsdorf, D. Kracht, Laseradditive Fertigung dünnwandiger Magnesiumbauteile. Workshop \textquotedblKonstruktion für die Additive Fertigung\textquotedbl26. September, Hannover (2018)

P. Jäschke, V. Wippo, H. Dittmar, U. Stute, D. Kracht, Development of innovative laser based processes for composites repair and processing using ablating and welding techniques. International Symposium on Laser Processing for CFRP and Composite Materials (LPCC)26.-27. April, Yokohama , LPCC-3-1 (2012)

A. Schoonderbeek, O. Haupt, L. Richter, D. Kracht, R. Kling, Advanced laser-based processes for silicon. Laser Materials Processing Conference8.-9. Dezember, Tokio , 159-164 (2008)

B. N. Chichkov, K. Hausmann, D. Wandt, U. Morgner, J. Neumann, D. Kracht, 60 fs pulses from an all-fiber dissipative soliton erbium oscillator. SPIE Photonics West: LASE22.-27. Januar, San Francisco , 7914-86 (2011)

D. Kracht, L. Winkelmann, O. Puncken, B. Schulz, S. Wagner, M. Hildebrandt, M. Frede, P. Weßels, Solid state lasers for gravitational wave detection. International Laser Physics Workshop (LPHYS)30. Juni-4. Juli, Trondheim (2008)

T. Theeg, K. Hausmann, M. Frede, H. Sayinc, J. Neumann, D. Kracht, Side-pumped, tapered fiber bundle for all-fiber counter-propagating pumped high power fiber amplifiers. SPIE Photonics West: LASE22.-27. Januar, San Francisco , 7914-76 (2011)

F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Investigations on Positively Chirped Pulses in a Thulium-doped Fiber Laser. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)12.-16. Mai, München , CJ-2.3 SUN (2013)

O. Prochnow, A. Rühl, M. Schultz, D. Wandt, D. Kracht, Generation of supercontinua with parabolic pulses. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)17.-22. Juni, München , 523 (2007)

P. Repgen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Amplification of ultrafast pulses in an extended Mamyshev regenerator. SPIE Photonics West 202031. Januar - 06. Februar, San Francisco (2020)

F. Wichmann, T. Theeg, H. Gebauer, K. Hausmann, H. Sayinc, L. Richter, J. Neumann, D. Kracht, Aufbau einer Anlage zur Herstellung von optischen Faserkomponenten mittels eines CO2-Laser. DPG Frühjahrstagung der Sektion AMOP13.-18. März, Dresden , Beitrag Q 49.10 (2011)

P. Booker, M. Dürbeck, N. G. Boetti, D. Pugliese, A. Abrate, D. Milanese, M. Steinke, J. Neumann, D. Kracht, Single-frequency Er3+ doped phosphate fiber MOPA. Conference on Lasers and Electro-Optics & European Quantum Electronics Conference (CLEO®/Europe-EQEC 2019)23.-27. Juni, München (2019)

P. Jäschke, U. Stute, D. Kracht, Thermal effects on cutting edge characteristics by laser machining of endless carbon fibre reinforced thermoplastics. SEICO, SAMPE EUROPE International Conference and Forum26.-27. März, Paris , Beitrag P 54 (2012)

M. Schultz, D. Wandt, U. Morgner, S. Ramachandran, S. Ghalmi, D. Kracht, J. Neumann, Sub-90-fs ytterbium all-fiber laser. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)14.-19. Juni, München , CF2.1 (2009)

B. N. Chichkov, C. Hapke, J. Neumann, D. Kracht, D. Wandt, U. Morgner, Pulse duration and energy scaling of femtosecond all-normal dispersion fiber oscillators. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, San Diego , AM4A.15 (2012)

D. Kracht, M. Schultz, H. Karow, O. Prochnow, D. Wandt, D. Neumann, Femtosecond Yb fiber lasers. Meeting of the IEEE Lasers & Electro-Optics Society (LEOS)4.-8. Oktober, Belek-Antalya , 381-382 (2009)

T. Theeg, H. Sayinc, J. Neumann, D. Kracht, Simulations and Experiments of a Lateral Pumped Fiber Combiner for Monolithic Fiber Laser and Amplifier Systems. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources26.-31. August, Stockholm , TuP.23 (2012)

F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Positively chirped pulses from a mode-locked thulium fiber laser. SPIE Photonics Europe: Laser Sources and Applications16.-19. April, Brüssel , 8433-17 (2012)

O. Puncken, L. Winkelmann, J. Neumann, D. Kracht, M. Frede, P. Weßels, Influence of doping concentration and corresponding heat generation on the performance of a high power two-head Nd:YAG laser. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)14.-19. Juni, München , CA.P.23 (2009)

G. Pelegrina-Bonilla, K. Hausmann, A. Tünnermann, P. Weßels, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Experimental and numerical investigations on asymmetric fused fibre couplers consisting of different single-mode fibres. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)12.-16. Mai, München , CE-4.2 TUE (2013)

A. Wienke, O. Puncken, D. Wandt, J. Neumann, D. Kracht, Ultrafast, short-wavelength Thulium-doped fiber lasers. EPS-QEOD Europhoton Conference02.-07. September, Barcelona (2018)

S. Spelthann, J. Thiem, L. Neumann, H.-H. Johannes, W. Kowalsky, D. Kracht, J. Neumann, A. Rühl, D. Ristau, Fluorescence Dynamics of Laseractive Nanocrystals Emitting in the Visible. Conference on Lasers and Electro-Optics & European Quantum Electronics (CLEO®/Europe-EQEC 2019)23.-27. Juni, München (2019)

K. Kiedrowski, F. Jakobs, J. Kielhorn, H.-H. Johannes, W. Kowalsky, D. Kracht, I. Balasa, D. Ristau, Laser-induced degradation and damage morphology in polymer optical fibers. SPIE Photonics Europe06.-10. April, online (2020)

M. Schultz, O. Prochnow, A. Rühl, M. Engelbrecht, D. Wandt, D. Kracht, Stretched pulse and self-similar operation of an ultra-short pulse all-polarization maintaining fiber laser. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)17.-22. Juni, München , 748 (2007)

O. de Varona Ortega, M. Steinke, J. Neumann, D. Kracht, P. Weßels, Modelling the influence of the third energy level in gain dynamics of fiber amplifiers. EPS-QEOD Europhoton Conference21.-26. August, Wien (2016)

D. Kracht, R. Huß, R. Wilhelm, J. Neumann, Core-doped ceramic Nd:YAG laser with Sm:YAG cladding. Conference on Lasers and Electro-Optics (CLEO)5.-11. Mai, Baltimore , 1065-1066 (2007)

T. Theeg, H. Sayinc, J. Neumann, L. Overmeyer, D. Kracht, Fiber integrated Ytterbium single frequency amplifier with a measured fundamental mode power content of 91% at 215 W. Workshop on Specialty Optical Fibers and Their Applications28.-30. August, Sigtuna , W3.33 (2013)

F. Haxsen, D. Wandt, U. Morgner, D. Kracht, J. Neumann, Dispersion Variation of a Thulium-doped Stretched-pulse Fiber Laser with Spectral Filtering. Conference on Lasers and Electro-Optics (CLEO)16.-21. Mai, San Jose , CMW3 (2010)

O. Puncken, D. C. Kirsch, A. Wienke, D. Wandt, J. Neumann, D. Kracht, An ultrafast Thulium laser with fundamental soliton emission at 1750 nm. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)25.-29. Juni, München (2017)

G. Pelegrina-Bonilla, A. Schwenke, H. Sayinc, U. Morgner, J. Neumann, B. N. Chichkov, C. L. Sajti, D. Kracht, Optical amplification at 1.06 µm from laser ablated neodymium nanoparticles embedded in a polymer host. SPIE Photonics West: LASE2.-7. Februar, San Francisco , 8609-13 (2013)

A. Wienke, D. Wandt., J.-B. Lecourt, Y. Hernandez, J. Neumann, D. Kracht, High energy fiber laser source at 1750 nm with variable repetition rate for imaging applications. XXI International Conference on Ultrafast Phenomena15.-20. Juli, Hamburg (2018)

J. Thiem, S. Spelthann, L. Neumann, H.-H. Johannes, W. Kowalsky, D. Kracht, J. Neumann, A. Rühl, D. Ristau, Design and optimization of laseractive nanoparticles for fiber lasers. Conference on Lasers and Electro-Optics & European Quantum Electronics (CLEO®/Europe-EQEC 2019)23.-27. Juni, München (2019)

K. Rettschlag, F. Kranert, A. Hohnholz, A. Wienke, O. Suttmann, J. Neumann, D. Kracht, R. Lachmayer, Laser deposition of fused silica coreless fibers to generate functional waveguides. Lasers in Manufacturing (LiM)23.-27. Juni, München (2019)

M. Schultz, O. Prochnow, A. Rühl, S. Ramachandran, S. Ghalmi, D. Wandt, D. Kracht, 52 fs fiber laser with a fiber-based dispersion control at 1 µm. Frontiers in Optics / Laser Science (FiO/LS)17. September, San Jose , FMF3 (2007)

O. de Varona Ortega, M. Steinke, H. Tünnermann, D. Kracht, J. Neumann, P. Weßels, Dynamics of Fiber Amplifiers in the Context of Gravitational Wave Detectors' Laser Sources. Gravitational Waves Advanced Detectors Workshop (GWADW)22.-28. Mai, La Biodola (2016)

D. Kracht, M. Frede, D. Freiburg, R. Wilhelm, C. Fallnich, Diode End-pumped Core-doped Ceramic Nd:YAG Laser. Advanced Solid-State Lasers (ASSL)6.-9. Februar, Wien , MA5 (2005)

T. Theeg, M. Frede, H. Sayinc, J. Neumann, D. Kracht, High power monolithic all-fiber counter-propagating pumped single-frequency amplifier. OFC/NFOEC6.-10. März, Los Angeles , OMH6 (2011)

F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Positively chirped pulse evolution in a passively mode-locked thulium-doped fiber laser. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, San Diego , AM4A.24 (2012)

O. Puncken, L. Winkelmann, P. Weßels, M. Frede, D. Kracht, Effect of pump light quality in end-pumped high power cw resonators with TEM00 operation. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources31. August-5. September, Paris (2008)

G. Pelegrina-Bonilla, K. Hausmann, K. Liu, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Single-mode WDM for core pumping thulium-doped fiber at 795 nm. SPIE Photonics West: LASE21.-26. Januar, San Francisco , 8237-81 (2012)

A. Wienke, F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Dispersion management with a normal dispersive fiber in an ultrafast thulium-doped fiber laser. SPIE Photonics Europe: Laser Sources and Applications16.-19.April, Brüssel , 8433-13 (2012)

E. Chatzizyrli, A. Wienke, R. Lachmayer, J. Neumann, D. Kracht, Structured Auxiliary Mesh (SAM) algorithm for opto-thermal simulation of laser-based lighting systems. Conference on Lasers and Electro-Optics & European Quantum Electronics Conference (CLEO®/Europe-EQEC 2019)23.-27. Juni, München (2019)

P. Kallage, C. von der Haar, S. Barcikowski, D. Kracht, H. Haferkamp, Verifikation verschiedener Lotlegierungen für das Laserstrahllöten von umformfähigen Mischverbindungen aus Stahl und Aluminium. Internationales Kolloquium Hart- und Hochtemperaturlöten und Diffusionsschweißen (LÖT)15.-17. Juni, Aachen , 178-183 (2010)

M. Schultz, H. Karow, D. Wandt, U. Morgner, D. Kracht, Wavelength tunable ytterbium fs-fiber-laser without dispersion compensation. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources31. August-5. September, Paris (2008)

O. de Varona Ortega, M. Steinke, D. Kracht, J. Neumann, P. Weßels, Single-frequency and single-mode fiber amplifier at 1.5-µm core-pumped at 1018 nm. SPIE Photonics West: LASE29. Januar - 01. Februar, San Francisco (2018)

D. Kracht, L. Winkelmann, O. Puncken, B. Schulz, S. Wagner, M. Hildebrandt, P. Weßels, M. Frede, High power single frequency lasers for gravitational wave detection. SPIE Photonics Europe: Solid State Lasers and Amplifiers7.-11. April, Straßburg (2008)

T. Theeg, C. Ottenhues, H. Sayinc, J. Neumann, D. Kracht, 158 W core-pumped single-frequency amplifier at kHz linewidth using a standard Ytterbium-doped single-mode fiber. SPIE Photonics West: LASE7.-12. Februar, San Francisco , 9344-6 (2015)

F. Haxsen, M. Engelbrecht, A. Rühl, D. Wandt, U. Morgner, D. Kracht, High-power passively mode-locked thulium-doped fibre ring laser with variable dispersion compensation. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources31. August-5. September, Paris (2008)

P. C. Repgen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, High-energy ultrafast Yb-fiber laser system based on a Mamyshev regenerator. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)23.-27. Juni, München (2019)

A. Wienke, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Femtosecond High Energy Regenerative Amplifier Operating at 1937 nm. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)21.-25. Juni, München , CA_4_! (2015)

R. Kalms, A. Büttner, M. Ernst, M. Hunnekuhl, L. Willemsen, P. Weßels, D. Kracht, J. Neumann, Opto-mechanical design and verification of the MOMA UV laser source for the ExoMars 2020 mission. SPIE Photonics West: LASE02.-07. Februar, San Francisco (2019)

B. Schulz, M. Frede, D. Kracht, Nd:YLF Laser Pumped at 880 nm-Excimer. Advanced Solid-State Photonics (ASSP)1.-4. Februar, Denver , WB15 (2009)

H. Dittmar, S. Blümel, P. Jäschke, U. Stute, D. Kracht, Advantages and challenges of CFRP laser machining with ns-pulse. International Congress on Applications of Lasers & Electro Optics (ICALEO)23.-27. September, Anaheim , 136-145 (2012)

V. Kuhn, D. Kracht, J. Neumann, P. Weßels, Yb-free Er-doped 976 nm Pumped Large Mode Area Fiber Amplifier with 67 W of Output Power. Advanced Solid-State Photonics (ASSP)13.-16. Februar, Istanbul , ATuB05 (2011)

J. Thiem, S. Spelthann, L. Neumann, H.-H. Johannes, W. Kowalsky, D. Kracht, J. Neumann, A. Rühl, D. Ristau, Towards temperature dependent emission characteristics in laser active nanocrystals. Nanophotonics and Micro/Nano Optics International Conference04.-06. September, München (2019)

F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Positively Chirped Pulses in a Mode-Locked Thulium Fiber Laser - Simulation and Experiment. Conference on Lasers and Electro-Optics (CLEO) and the International Quantum Electronics Conference (IQEC)6.-11. Mai, San Jose , CTu1I.2 (2012)

P. C. Repgen, U. Morgner, A. Tajalli, D. Wandt, J. Neumann, D. Kracht, Complete characterization of ultrafast pulses of an Yb-doped fiber amplifier via dispersion scans after compression in a grism compressor. SPIE Photonics West: LASE27. Januar - 01. Februar, San Francisco (2018)

A. Wienke, D. Wandt, J. Neumann, D. Kracht, High energy, femtosecond fiber laser source at 1750 nm for 3-photon microscopy application. SPIE Photonics Europe22.-26. April, Straßburg (2018)

S. Bastick, P. Jäschke, F. Völkermeyer, C. Nölke, F. Fischer, U. Stute, D. Kracht, Evaluation of a novel process for an in-situ sealing of the cutting edge during laser cutting of carbon fiber reinforced plastics (CFRP). International Congress on Applications of Lasers & Electro Optics (ICALEO)23.-27. Oktober, Orlando , 1204 (2011)

S. Kanzelmeyer, H. Sayinc, T. Theeg, M. Frede, J. Neumann, D. Kracht, All-fiber based amplification of 40 ps pulses from a gain-switched laser diode. SPIE Photonics West: LASE22.-27. Januar, San Francisco , 791411 (2011)

B. Schulz, M. Frede, D. Kracht, P. Burdack, M. Hunnekuhl, I. Freitag, Compact high-power, pulsed, single-frequency MOPA laser system with 20 W average output power. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)17.-22. Juni, München , 30 (2007)

S. Dudziak, M. Gieseke, H. Haferkamp, S. Barcikowski, D. Kracht, Functionality of Laser-Sintered Shape Memory Micro-Actuators. International Conference on Laser Assisted Net Shape Engineering (LANE)21.-24. September, Erlangen , 607-615 (2010)

V. Kuhn, D. Kracht, J. Neumann, P. Weßels, Er-doped single-frequency photonic crystal fiber amplifier with 70 W of output power for gravitational wave detection. SPIE Photonics West: LASE21.-26. Januar, San Francisco , 82371G (2012)

J. Thiem, N. Tinne, D. Kracht, J. Neumann, D. Ristau, Charakterisierung der optischen Dämpfung in passiven und aktiven polymeroptischen Fasern. 119. Jahrestagung der DGaO22.-26. Mai, Aalen (2018)

F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Hybrid mode-locked thulium soliton fiber laser. IEEE Photonics Conference (IPC)9.-13. Oktober, Arlington , ThAA3 (2011)

P. C. Repgen, A. Tajalli, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Characterization of ultrafast pulses of an Yb-doped fiber amplifier via dispersion scans after compression in a grism compressor. SPIE Photonics West: LASE27. Januar - 02. Februar, San Francisco (2017)

A. Wienke, F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Fiber based dispersion management in an ultrafast thulium-doped fiber laser and external compression with a normal dispersive fiber. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, San Diego , AT4A.26 (2012)

C. Basu, O. Puncken, L. Winkelmann, P. Weßels, J. Neumann, D. Kracht, Development of a solid state laser amplifier source for the third generation of gravitational wave detectors. Conference on Lasers and Electro-Optics (CLEO) and the International Quantum Electronics Conference (IQEC)22.-26. Mai, München , CA5.3 (2011)

S. Kanzelmeyer, M. Hildebrandt, T. Theeg, M. Frede, D. Kracht, J. Neumann, Regenerative amplification of a 40 ps gain-switched laser diode in an all-fibrer setup. EOS Topical Meeting on Lasers (ETML)27.-30. September, Capri , 2298 (2009)

B. Schulz, M. Frede, R. Wilhelm, D. Kracht, High Power End-Pumped Nd:YVO4 Amplifier. Advanced Solid-State Photonics (ASSP)29. Januar - 1. Februar, Incline Village , WB15 1-3 (2006)

M. Engelbrecht, D. Wandt, D. Kracht, Microsecond-pulsed ytterbium fiber laser system with a broad tuning range and a small spectral linewidth. SPIE Photonics West: LASE20.-25. Januar, San Jose (2007)

V. Kuhn, D. Kracht, J. Neumann, P. Weßels, Yb-free Er-doped 980 nm Pumped Single-Frequency Fiber Amplifier with Output Power of 54 W and Near-Diffraction Limited Beam Quality. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)22.-26. Mai, München , CJ7.5 (2011)

K. Kiedrowski, J. Thiem, F. Jakobs, J. Kielhorn, I. Balasa, D. Kracht, D. Ristau, Determination of the laser-induced damage threshold of polymer optical fibers. Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference23.-26. September, Boulder (2018)

G. Herink, S. Büsche, T. Theeg, M. Hildebrandt, M. Frede, J. Neumann, D. Kracht, Faserverstärkersystem mit arbiträren und festen Pulsformen im ns- und ps-Bereich. Jahrestagung der DPG und DPG-Frühjahrstagung2.-6. März, Hamburg , Q12.4 (2009)

A. Rühl, O. Prochnow, D. Wandt, D. Kracht, Hybrid mode-locking scheme for similariton fiber lasers. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)17.-22. Juni, München , 727 (2007)

A. Wienke, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Comparison Between Tm:YAP and Ho:YAG Ultrashort Pulse Regenerative Amplification. Advanced Solid-State Lasers (ASSL)4.-9. Oktober, Berlin , ATh2A.39 (2015)

C. Basu, O. Puncken, M. Frede, B. Schulz, P. Weßels, J. Neumann, D. Kracht, L. Winkelmann, Single frequency solid state laser amplifier system: Towards 3rd generation of gravitational wave detectors. Conference on Lasers and Electro-Optics (CLEO) and the International Quantum Electronics Conference (IQEC)28. August-1. September, Sydney , 1111-1113 (2011)

S. Blümel, P. Jäschke, V. Wippo, S. Bastick, U. Stute, D. Kracht, H. Haferkamp, Laser machining of CFRP using a high power laser - Investigation on the heat affected zone. European Conference on Composite Materials (ECCM)24.-26. Juni, Venedig (2012)

H. Karow, M. Schultz, D. Wandt, D. Kracht, Ytterbium Kurzpulsfaserlaser ohne Dispersationskompensation. DPG Frühjahrstagung10.-14. März, Darmstadt , Q 39.5 (2008)

S. Spelthann, J. Thiem, L. Neumann, H.-H. Johannes, W. Kowalsky, D. Kracht, J. Neumann, A. Rühl, D. Ristau, Design of Pr:YLF Core-Shell Nanocrystals for Fiber Lasers Emitting in the Visible Spectral Range. Nanophotonics and Micro/Nano Optics International Conference04.-06. September, München (2019)

M. Engelbrecht, D. Wandt, D. Kracht, Single-Frequency ytterbium-doped fiber laser with 26 nm tuning range. Advanced Solid-State Photonics (ASSP)28.-31. Januar, Vancouver (2007)

V. Kuhn, P. Weßels, J. Neumann, D. Kracht, Suppression of Parasitic Laser Processes in Cladding Pumped Er:Yb-Codoped Fiber Amplifier via Auxiliary Signal at 1.0 µm. Advanced Solid-State Photonics (ASSP)31. Januar-3. Februar, San Diego , AWB13 (2010)

A. Tünnermann, M. Karow, T. Theeg, J. Neumann, D. Kracht, P. Weßels, Fiber modes in non-confocal cavities. SPIE Photonics West: LASE1.-6. Februar, San Francisco , 8961-116 (2014)

M. Hildebrandt, S. Büsche, P. Weßels, M. Frede, J. Neumann, D. Kracht, Detection and simulation of thermally induced deformation of Brillouin scattering spectra in a high-power PCF amplifier. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)14.-19. Juni, München , CJ1.4 (2009)

A. Rühl, O. Prochnow, D. Wandt, C. Fallnich, D. Kracht, Photonic bandgap fiber for dispersion management of similaritons around 1 µm. Conference on Lasers and Electro-Optics (CLEO) and the Quantum Electronics and Laser Science Conference (QELS)21.-26. Mai, Long Beach (2006)

A. Wienke, F. Haxsen, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Stretched-pulse operation of a thulium-doped fiber laser with a fiber-based dispersion management. Conference on Lasers and Electro-Optics (CLEO) and the International Quantum Electronics Conference (IQEC)6.-11. Mai, San Jose , CM1B.7 (2012)

A. Wienke, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Regenerative amplification of ultrashort pulses at 2 µm with a Thulium-doped YAP crystal. Conference on Lasers and Electro-Optics (CLEO)8.-13. Juni, San Jose , STh4E.1 (2014)

S. Böhm, K. Hausmann, M. Wysmolek, F. Wellmann, G. Pelegrina-Bonilla, S. Schlangen, K. Bremer, B. Roth, L. Overmeyer, M. Steinke, J. Neumann, D. Kracht, Development of a reliable fabrication process of evanescent field coupled fused fiber couplers. SPIE Photonics Europe22.-26. April, Straßburg (2018)

M. Karow, C. Zhu, D. Kracht, J. Neumann, A. Galvanauskas, P. Weßels, Fundamental Gaussian mode content measurements on active large core CCC fibers. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)12.-16. Mai, München , CJ-1.6 SUN (2013)

S. Spelthann, N. Tinne, D. Kracht, J. Neumann, D. Ristau, Nd2O3-Nanopartikel-Dispersionslaser im sichtbaren Spektralbereich. 119. Jahrestagung der DGaO22.-26. Mai, Aalen (2018)

M. Engelbrecht, F. Haxsen, A. Rühl, D. Wandt, D. Kracht, 320-fs thulium-doped fiber-ring-laser with a pulse energy of 3.5-nJ. Conference on Lasers and Electro-Optics (CLEO)4.-9. Mai, San Jose (2008)

R. Marwah, S. Mebben, R. Huß, J. Neumann, D. Kracht, High Efficiency Generation of Second and Fourth Harmonic of Nd:YAG. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources31. August-5. September, Paris (2008)

H. Tünnermann, J. H. Pöld, J. Neumann, D. Kracht, B. Willke, P. Weßels, Collinear Coherent Beam Combining of Two Ytterbium Doped Single Frequency Fiber Amplifiers. Conference on Lasers and Electro-Optics (CLEO) and the International Quantum Electronics Conference (IQEC)1.-6. Mai, Baltimore , CFE1 (2011)

M. Hildebrandt, M. Frede, R. Wilhelm, P. Kwee, B. Willke, D. Kracht, Single-frequency photonic crystal fiber amplifier with 148 W output power. SPIE Photonics West: LASE20.-25. Januar, San Jose , 6453-55 (2007)

A. Rühl, M. Engelbrecht, F. Haxsen, D. Wandt, D. Kracht, Passively Mode-Locked Thulium-Doped Fiber Oscillator with a Pulse Energy of 4 nJ. Advanced Solid-State Photonics (ASSP)27.-30. Januar, Nara (2008)

R. Wilhelm, D. Freiburg, M. Frede, D. Kracht, Optimized Multi-Segmented Crystal Geometries for Power Scaling of End-Pumped Lasers. Conference on Lasers and Electro-Optics (CLEO) and the Quantum Electronics and Laser Science Conference (QELS)21.-26. Mai, Long Beach , 3ThC38 (2006)

S. Böhm, K. Hausmann, M. Wysmolek, F. Wellmann, G. Pelegrina-Bonilla, S. Schlangen, K. Bremer, B. Roth, L. Overmeyer, M. Steinke, D. Kracht, J. Neumann, Entwicklung eines Herstellungsprozesses von faserbasierten Evaneszenzfeldkopplern. 119. Jahrestagung der DGaO22.-26. Mai, Aalen (2018)

H. Karow, M. Schultz, D. Wandt, U. Morgner, D. Kracht, J. Neumann, Pulse dynamics of all-normal dispersion mode-locked ytterbium lasers. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)14.-19. Juni, München , CF.P.25 (2009)

M. Ernst, A. Büttner, M. Hunnekuhl, R. Kalms, P. Weßels, L. Willemnsen, J. Neumann, D. Kracht, Mechanical Design and Testing of the MOMA Flight Model Laser Head for the EXOMARS 2020 Mission. ESA International Conference on Space Optics (ICSO)09.-12. Oktober, Chania (2018)

S. Mebben, R. Huß, R. Wilhelm, J. Neumann, D. Kracht, Compact, longitudinally stack-pumped, passively Q-switched Nd:YAG oscillator. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources31. August-5. September, Paris (2008)

H. Tünnermann, T. Theeg, H. Sayinc, J. Neumann, D. Kracht, P. Weßels, Power Noise Sources of Single Frequency Fibre Amplifiers. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)12.-16. Mai, München , CJ-8.5 WED (2013)

M. Hildebrandt, M. Frede, D. Kracht, Tunable single-frequency external-cavity diode laser ytterbium-doped fiber amplifier system. Advanced Solid-State Photonics (ASSP)28.-31. Januar, Vancouver , ME06 (2007)

A. Rühl, V. Kuhn, D. Wandt, D. Kracht, Passively Mode-Locked Erbium-Doped Fiber Oscillator with Pulse Energies above 10 nJ. Advanced Solid-State Photonics (ASSP)27.-30. Januar, Nara (2008)

R. Wilhelm, D. Freiburg, M. Frede, D. Kracht, C. Fallnich, Power scaling of diode end-pumped Nd:YAG lasers via multi-segmented rods. Conference on Lasers and Electro-Optics (CLEO)22.-27. Mai, Baltimore , 171-173 (2005)

P. Booker, F. Kranert, M. Steinke, J. Neumann, D. Kracht, Pump wavelength dependence of ASE and SBS in Er3+:Yb3+-codoped Fiber Amplifiers. SPIE Photonics Europe22.-26. April, Straßburg (2018)

M. Karow, C. Basu, D. Kracht, J. Neumann, P. Weßels, Single-frequency Yb-doped PCF MOPA with 294W of output power for gravitational wave detection. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)22.-26. Mai, München , CJ7.4 (2011)

M. Steinke, E. Schreiber, D. Kracht, J. Neumann, P. Weßels, Development of a cascaded Raman fiber laser with 6.5W output power at 1480nm supported by detailed numerical simulations. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)12.-16. Mai, München , CJ-P.16 WED (2013)

F. Kranert, P. Neef, J. Budde, R. Bernhard, M. Lammers, K. Rettschlag, T. Grabe, A. Wienke, J. Neumann, H. Wiche, V. Wesling, H. Ahlers, R. Lachmayer, D. Kracht, 3D-printed, low-cost, lightweight optomechanics for a compact, low-power solid state amplifier system. SPIE Photonics West: LASE01.-06. Februar, San Francisco (2020)

D. Mortag, T. Theeg, K. Hausmann, L. Grüner-Nielsen, K. G. Jespersen, D. Wandt, U. Morgner, D. Kracht, J. Neumann, Generation of sub-200-fs microjoule pulses from an all-fiber CPA system. Specialty Optical Fibers & Applications (SOF)12.-15. Juni, Toronto , SOWA2 (2011)

H. Tünnermann, J. Neumann, D. Kracht, P. Weßels, Coherent Beam Combining at 1064 nm Employing an Erbium Doped Fiber Amplifier for Phase Control. Advanced Solid-State Photonics (ASSP)13.-16. Februar, Istanbul , AMB06 (2011)

M. Hildebrandt, M. Frede, D. Kracht, I. Freitag, P. Weßels, Single-frequency fiber amplifier emitting 7.8 W at 1030 nm. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, Incline Village , MB6 1-3 (2006)

A. Rühl, O. Prochnow, D. Wandt, D. Kracht, B. Burgoyne, N. Godbout, S. Lacroix, Simulation der Dynamik parabolischer Pulse in Femtosekunden-Faserlasern. WLT Laser Summer School28.-30. Juni, Hannover (2006)

R. Wilhelm, M. Frede, D. Kracht, Power Scaling of End-Pumped Nd:YAG Rod Lasers into the Kilowatt Region. Advanced Solid-State Photonics (ASSP)28.-31. Januar, Vancouver , MB19 (2007)

P. Booker, F. Kranert, M. Steinke, J. Neumann, D. Kracht, Pump wavelength dependence of ASE and SBS in Er3+:Yb3+-codoped Fiber Amplifiers. SPIE Photonics Europe22.-26. April, Straßburg (2018)

M. Karow, J. Neumann, D. Kracht, P. Weßels, TEM00 mode content measurements on a large core passive chirally coupled core fiber. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources26.-31. August, Stockholm , TuP27 (2012)

M. Steinke, J. Neumann, D. Kracht, P. Weßels, Statistical model of the energy transfer in Er$^3$+:Yb$^3$+-codoped glasses. SPIE Photonics West: LASE13.-18. Februar, San Francisco (2016)

F. Kranert, P. Jäschke, A. Hohnholz, J. Neumann, K. Rettschlag, A. Wienke, D. Kracht, R. Lachmayer, Generation of functional curved waveguides by CO2-laser based deposition of coreless fused silica fibers. SPIE Photonics Europe Digital Forum06.-10. April, online (2020)

D. Mortag, J. Neumann, D. Kracht, U. Morgner, D. Wandt, H. Sayinc, 93 fs pulses from a low repetition rate fiber laser. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)14.-19. Juni, München , CF2.3 (2009)

A. Tünnermann, O. Puncken, M. Frede, P. Weßels, D. Kracht, Intrinsische Reduktion von Depolarisationsverlusten in Nd:YAG Kristallen. Jahrestagung der DPG und DPG-Frühjahrstagung2.-6. März, Hamburg , Q 8.3 (2009)

M. Hildebrandt, S. Büsche, P. Weßels, M. Frede, D. Kracht, Evolution of SBS gain spectra in high-power single-frequency ytterbium doped fiber amplifiers. Conference on Lasers and Electro-Optics (CLEO)4.-9. Mai, San Jose (2008)

A. Rühl, O. Prochnow, D. Wandt, D. Kracht, Similariton fiber laser around 1 µm with a photonic bandgap fiber for dispersion control. Advanced Solid-State Photonics (ASSP)28.-31. Januar, Vancouver , TuB1 (2007)

R. Wilhelm, M. Frede, D. Freiburg, D. Kracht, C. Fallnich, Thermal Design of Segmented Rod Laser Crystals. Advanced Solid-State Lasers (ASSL)6.-9. Februar, Wien , MB46 (2005)

P. Booker, O. de Varona Ortega, P. Weßels, M. Steinke, J. Neumann, D. Kracht, Numerical investigations on off-resonant pumped Er3+:Yb3+-codoped fiber amplifiers. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)25.-29. Juni, München , CJ-P.12 (2017)

M. Karow, H. Tünnermann, J. Neumann, D. Kracht, P. Weßels, Beam quality degradation and mode instabilities of a strongly pumped Yb-doped photonic crystal fiber amplifier. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources26.-31. August, Stockholm , ThP29 (2012)

M. Steinke, J. Neumann, D. Kracht, P. Weßels, Fiber amplifiers for next-generation GWDs: State of the art, prospects, and challenges. LSC Virgo March 2016 Meeting14.-18. März, Pasadena (2016)

F. Wellmann, M. Steinke, F. Meylahn, N. Bode, B. Willke, L. Overmeyer, P. Weßels, J. Neumann, D. Kracht, Low-noise, single-frequency 200 W fiber amplifier. SPIE Photonics West: LASE04.-06. Februar, San Francisco (2020)

D. Mortag, C. Hapke, D. Wandt, U. Morgner, D. Kracht, J. Neumann, Low Repetition Rate High-Energy Fiber Oscillator. Conference on Lasers and Electro-Optics (CLEO)16.-21. Mai, San Jose , JTuD37 (2010)

H. Tünnermann, J. Neumann, D. Kracht, P. Weßels, Frequency domain analysis of dynamic refractive index changes in fiber amplifiers. SPIE Photonics West: LASE21.-26. Januar, San Francisco , 82371B-1 (2012)

M. Hinkelmann, B. Schulz, D. Wandt, U. Morgner, M. Frede, J. Neumann, D. Kracht, CPA-free amplification of sub-10 ps pulses in Ho:YLF to the mJ-level at 2 µm wavelength. SPIE Photonics West: LASE02.-07. Februar, San Francisco (2019)

A. Rühl, O. Prochnow, D. Wandt, D. Kracht, B. Burgoyne, N. Godbout, S. Lacroix, Parabolic pulse regime of an ultrafast fiber laser. Advanced Solid-State Photonics (ASSP)28.-31. Januar, Vancouver , TuB2 (2007)

L. Winkelmann, O. Puncken, C. Veltkamp, R. Kluzik, M. Frede, J. Neumann, D. Kracht, P. Weßels, 210 W single-frequency laser with 88% of output power in TEM00 mode for Advanced LIGO. Frontiers in Optics / Laser Science (FiO/LS)11.-15. Oktober, San Jose , JTuA2 (2009)

J. H. Borchard, E. Dahl, M. Gieseke, C. Nölke, L. A. Kahrs, D. Kracht, M. Lambertz, F. Wehrheim, T. Ortmaier, Various Fabricated Micro-Scale Tips for Laparo-Endoscopic Surgery Instruments. Russian German Conference on Biomedical Engineering (RGC)25.-27. Juni, St. Petersburg (2014)

M. Karow, J. Neumann, D. Kracht, P. Weßels, Investigations on the Impact of Amplified Spontaneous Emission on the Brillouin Scattering of a Single-Frequency Signal. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, San Diego , AM4A.7 (2012)

M. Steinke, E. Schreiber, D. Kracht, J. Neumann, P. Weßels, Kaskadierter Raman-Faserlaser mit 5W Ausgangsleistung bei 1480nm. DPG Frühjahrstagung der Sektion AMOP18.-22. März, Hannover , Q 57.2 (2013)

F. Wellmann, M. Steinke, F. Meylahn, N. Bode, B. Willke, L. Overmeyer, P. Weßels, J. Neumann, D. Kracht, Characterization and Long-Term Operation of a 200 W Single-Frequency Fiber Amplifier for Gravitational Wave Detectors. Laser Congress 2019 (ASSL, LAC, LS&C)29. September - 03. Oktober, Wien (2019)

D. Mortag, T. Theeg, K. Hausmann, L. Grüner-Nielsen, K. G. Jespersen, D. Wandt, U. Morgner, D. Kracht, J. Neumann, Sub-200-fs microjoule pulses from an all-fiber CPA system. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)22.-26. Mai, München , CJ4.1 (2011)

H. Tünnermann, J. Neumann, D. Kracht, P. Weßels, Temperature Induced Dynamic Refractive Changes in Fiber Amplifiers. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources26.-31. August, Stockholm , FrB.6 (2012)

M. Hinkelmann, D. Wandt, U. Morgner, J. Neumann, K. Zawilski, P. Schunemann, D. Kracht, High repetition rate, wavelength-tunable mid-IR source driven by ps-pulses from a Ho:YLF amplifier at 2 µm. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)23.-27. Juni, München (2019)

A. Rühl, V. Kuhn, D. Wandt, D. Kracht, 10 nJ-normal dispersion erbium-doped fiber laser exhibiting spectral filtering. Conference on Lasers and Electro-Optics (CLEO)4.-9. Mai, San Jose (2008)

L. Winkelmann, O. Puncken, B. Schulz, S. Wagner, C. Veltkamp, R. Wilhelm, P. Weßels, M. Frede, D. Kracht, Mode discrimination in injection locked high-power single-frequency lasers. Conference on Lasers and Electro-Optics (CLEO)4.-9. Mai, San Jose (2008)

U. Bünting, H. Sayinc, D. Wandt, U. Morgner, J. Neumann, D. Kracht, Regenerative Yb:KLuW Thin Disk Amplifier. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)14.-19. Juni, München , CA2.2 (2009)

K. Kiedrowski, I. Balasa, D. Kracht, D. Ristau, Bestimmung optischer Eigenschaften von Werkstoffen zur Herstellung passiver und aktiver polymeroptischer Faserkomponenten. 119. Jahrestagung der DGaO22.-26. Mai, Aalen (2018)

M. Steinke, D. Kracht, J. Neumann, P. Weßels, Clustering and up-conversion effects in an Er$^3$+:Yb$^3$+ co-doped fused silica fibre: A comparison between experiment and models. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)21.-25. Juni, München , CJ_P_25 (2015)

F. Fischer, P. Jäschke, U. Stute, D. Kracht, Laser Surface Pre-Treatment of CFRP in Consideration of the Absorption Behaviour. International Congress on Applications of Lasers & Electro Optics (ICALEO)23.-27. Oktober, Orlando , 1203 (2011)

D. Mortag, D. Wandt, U. Morgner, D. Kracht, J. Neumann, All-fiber Ytterbium Femtosecond Dissipative-Soliton Laser. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources29. August-3. September, Hamburg , ThC5 (2010)

H. Tünnermann, T. Theeg, K. Hausmann, J. Neumann, D. Kracht, P. Weßels, All-fiber Coherent Beam Combining of Two Ytterbium Doped Single Frequency Fiber Amplifiers. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, San Diego , AM4A.4 (2012)

M. Hinkelmann, D. Wandt, J. Neumann, D. Kracht, U. Morgner, Ultrashort pulse CPA-free Ho:YLF linear amplifier. SPIE Photonics West: LASE27. Januar - 01. Februar, San Francisco (2018)

S. Hochheim, E. Brockmüller, P. Weßels, J. Koponen, T. Lowder, S. Novotny, J. Neumann, D. Kracht, Integrated signal and pump combiner in chirally-coupled-core fibers for all-fiber lasers and amplifiers. Advanced Photonics Congress 202014. Juli, online (2020)

V. Wippo, P. Jäschke, U. Stute, D. Kracht, H. Haferkamp, The influence of carbon fibres on the temperature distribution during the laser transmission welding process. European Conference on Composite Materials (ECCM)24.-28. Juni, Venedig (2012)

U. Bünting, P. Weßels, H. Sayinc, O. Prochnow, D. Wandt, D. Kracht, Ultrafast Yb:KYW regenerative amplifier with combined gain spectra of the optical axes Nm and Np. SPIE Photonics West: LASE19.-24. Januar, San Jose , 68711C-1-8 (2008)

C. Kolleck, A. Büttner, M. Ernst, M. Hunnekuhl, T. Hülsenbusch, A. Moalem, M. Priehs, D. Kracht, J. Neumann, Improved design of a pulsed UV laser source for application in space. SPIE Photonics West: LASE2.-7. Februar, San Francisco , 8599-22 (2013)

M. Steinke, J. Neumann, D. Kracht, P. Weßels, A novel stochastic model for the energy transfer process in Er$^3$+:Yb$^3$+ codoped phosphosilicate fibers. EPS-QEOD Europhoton Conference21.-26. August, Wien (2016)

M. Frede, B. Schulz, R. Wilhelm, D. Kracht, Single-Frequency Amplifier for the use in Gravitational Wave Detectors. EPS-QEOD Europhoton Conference on Solid State and Fiber Coherent Light Sources10.-15. September, Pisa (2006)

J. Neumann, A. Büttner, M. Ernst, M. Hunnekuhl, R. Kalms, P. Weßels, D. Kracht, Development of the Pulsed Ultraviolet Laser for the Mars Organic Molecule Analyzer (MOMA) on the ExoMars 2020 Rover. ESA/NASA 2nd International Workshop on Space-based LIDAR Remote Sensing Techniques and Emerging Technologies04.-08. Juni, Milos (2018)

H. Tünnermann, Y. Feng, P. Jahn, J. Neumann, D. Kracht, P. Weßels, The Optical Phase and Single Frequency Fiber Amplifiers: Coupling Mechanisms and their Application. Frontiers in Optics / Laser Science (FiO/LS)6.-10. Oktober, Orlando , FW2A.2 (2013)

S. Hochheim, R. Houssaini, M. Steinke, J. Neumann, D. Kracht, Monolithic tunable fiber laser for real-time S2-measurements. EPS-QEOD Europhoton Conference02.-07. September, Barcelona (2018)

H. Sayinc, S. Kanzelmeyer, K. Hausmann, T. Theeg, J. Neumann, D. Kracht, Gain switched laser diode based all-fiber laser source emitting simultaneously at 8 different wavelengths in the NIR region. Advanced Solid-State Photonics (ASSP)13.-16. Februar, Istanbul , ATuB7 (2011)

M. Wysmolek, M. Steinke, U. Morgner, J. Neumann, D. Kracht, Polarized monolithic fiber oscillator for pico- and nanosecond operation at 2088 nm. SPIE Photonics West: LASE02.-07. Februar, San Francisco (2019)

U. Bünting, P. Weßels, H. Sayinc, O. Prochnow, D. Wandt, D. Kracht, Ultrafast Yb:KYW regenerative amplifier with combined gain spectra of the optical axes Nm and Np. Advanced Solid-State Photonics (ASSP)27.-30. Januar, Nara , WB15 (2008)

C. Kolleck, A. Büttner, M. Ernst, M. Hunnekuhl, T. Hülsenbusch, M. Priehs, D. Kracht, J. Neumann, Progress in the development of a pulsed UV laser system for an LDMS instrument on Mars. SPIE Photonics West: LASE21.-26. Januar, San Francisco , 8235-41 (2012)

M. Steinke, T. Theeg, M. Wysmolek, C. Ottenhues, T. Pulzer, J. Neumann, D. Kracht, Fabrication of versatile cladding light strippers and fiber end-caps with CO2 laser radiation. SPIE Photonics West: LASE27. Januar - 01. Februar, San Francisco (2018)

M. Frede, R. Wilhelm, C. Fallnich, D. Kracht, F. Seifert, B. Willke, High-Power-Laser System for Gravitational Wave Detection. Topical Problems of Nonlinear Wave Physics2.-9. August, St. Petersburg (2005)

J. Neumann, M. Ernst, F. Goesmann, M. Hilchenbach, A. Koch, T. Lang, R. Marwah, S. Mebben, A. Moalem, O. Roders, A. Schneider, E. Steinmetz, I. Szemerey, C. Wagner, C. Kolleck, D. Kracht, Development of a pulsed ultraviolet solid-state laser system for Mars surface analysis by laser desorption/ionization mass spectroscopy. European Planetary Science Congress (EPSC)13.-18. September, Potsdam (2009)

H. Tünnermann, P. Jahn, V. Quetschke, J. Neumann, D. Kracht, P. Weßels, SBS Mitigation via Phase Modulation and Demodulation. Conference on Lasers and Electro-Optics (CLEO)8.-13. Juni, San Jose , SW3N.2 (2014)

H. Sayinc, T. Theeg, G. Pelegrina-Bonilla, K. Hausmann, S. Yilmaz, C. Ottenhues, M. Wysmolek, J. Neumann, D. Kracht, Novel Optical Fiber Couplers. International Conference on Applied Optics and Photonics17.-21. Mai, Hannover (2016)

M. Wysmolek, H. Sayinc, J. Neumann, D. Kracht, Gain-switched all-fiber sources at 2 µm. SPIE Photonics West: LASE1.-6. Februar, San Francisco , 8961-87 (2014)

U. Bünting, H. Sayinc, P. Weßels, D. Wandt, U. Morgner, D. Kracht, High Energy Regenerative Thin Disk Amplifier with Sub 200 fs Pulses and 10 W Average Power. Conference on Lasers and Electro-Optics (CLEO) and the International Quantum Electronics Conference (IQEC)31. Mai-5. Juni, Baltimore , 1-2 (2009)

C. Kolleck, A. Büttner, M. Ernst, T. Hülsenbusch, T. Lang, R. Marwah, M. Priehs, D. Kracht, J. Neumann, Optical and thermal design of a compact passively Q-switched laser system for the Mars Organic Molecule Analyzer (MOMA). SPIE Photonics West: LASE22.-27. Januar, San Francisco , 7912-1 (2011)

M. Steinke, C. Bremauer, O. de Varona Ortega, J. Neumann, D. Kracht, P. Weßels, Interferometric modal content measurements in fibers. SPIE Photonics West: LASE28. Januar - 02. Februar, San Francisco (2017)

M. Frede, D. Freiburg, R. Wilhelm, D. Kracht, High power 885 nm end-pumped Nd:YAG laser. SPIE Photonics West: LASE20.-25. Januar, San Jose , 64510G (2007)

J. Neumann, S. Hahn, R. Huß, D. Freiburg, R. Wilhelm, M. Frede, D. Kracht, Passively Q-Switched Nd:YAG Laser System for Spaceborne Altimetry. EOS Topical Meeting on Photonic Devices in Space, EOS Annual Meeting16.-19. Oktober, Paris , 58-59 (2006)

H. Tünnermann, J. Neumann, D. Kracht, P. Weßels, On the Effective Ion Lifetime in Fiber Amplifiers. Conference on Lasers and Electro-Optics (CLEO)9.-14. Juni, San Jose , art. no. 6833484 (2013)

G. Hohenhoff, H. Meyer, P. Jäschke, T. Ripken, D. Kracht, S. Kaierle, Comparison of SLOT and µ-CT Investigation of 3D printed polymer parts for quality assurance. International Congress on Applications of Lasers & Electro-Optics (ICALEO)07.-10. Oktober, Orlando (2019)

H. Sayinc, K. Hausmann, C. Ottenhues, O. Isik, M. Steinke, S. Yilmaz, S. Lamrini, J. Neumann, F. O. Ilday, D. Kracht, All-fiber Combining Concepts in the Wavelength Range Around 2 µm. Frontiers in Optics17.-21. Oktober, Rochester (2016)

M. Wysmolek, H. Sayinc, U. Morgner, D. Klemme, K. Lauritsen, S. Lamrini, P. Fuhrberg, J. Neumann, D. Kracht, All-fiber arbitrary pulse form generation and amplification in Tm$^3$+ doped optical fibers. SPIE Photonics West: LASE13.-18. Februar, San Francisco (2016)

S. Büsche, M. Hildebrandt, M. Frede, D. Kracht, Messung von Emissionsspektren der Brillouin Streuung in Ytterbium dotierten einfrequenten Faserverstärkern mit 130 W Ausgangsleistung. DPG Frühjahrstagung10.-14. März, Darmstadt , Q13.5 (2008)

C. Kolleck, M. Ernst, T. Hülsenbusch, T. Lang, R. Marwah, S. Mebben, M. Priehs, D. Kracht, J. Neumann, Development of a Pulsed UV Laser System for Laser-Desorption Mass Spectrometry on Mars. International Conference on Space Optics (ICSO)4.-8. Oktober, Rhodos (2010)

M. Steinke, J. Neumann, D. Kracht, P. Weßels, Passive noise suppression in cascaded Raman fiber lasers. SPIE Photonics West: LASE7.-12. Februar, San Francisco , 9347-40 (2015)

M. Frede, R. Wilhelm, D. Kracht, C. Fallnich, F. Seifert, B. Willke, 195 W injection-locked single-frequency laser system. Conference on Lasers and Electro-Optics (CLEO)22.-27. Mai, Baltimore , 1-3 (2005)

J. Neumann, S. Hahn, R. Huß, D. Freiburg, C. Kolleck, R. Wilhelm, D. Kracht, Thermal vacuum and vibration testing of the BepiColombo (mercury) laser altimeter prototype laser. SPIE Photonics West: LASE19.-24. Januar, San Jose (2008)

S. Unland, S. Spelthann, J. Thiem, F. Jakobs, J. Kielhorn, P. Ang, H.-H. Johannes, D. Kracht, J. Neumann, A. Rühl, W. Kowalsky, D. Ristau, Highly efficienct Rhodamine B doped polymer fiber lasers. The 28th International Conference on Plastic Optical Fibers20.-22. November, Yokohama (2019)

R. Huß, S. Hahn, J. Neumann, R. Wilhelm, M. Frede, D. Kracht, Passiv gütegeschalteter Nd:YAG-Laser für Weltraumanwendungen. DPG Frühjahrstagung der Sektion AMOP13.-17. März, Frankfurt am Main (2006)

H. Sayinc, T. Theeg, C. Ottenhues, K. Hausmann, H. Tünnermann, P. Weßels, J. Neumann, D. Kracht, Fiber components, fiber amplifiers and phase control for coherent combination. Frontiers in Optics / Laser Science (FiO/LS)19.-23. Oktober, Tucson (2014)

M. Wysmolek, H. Sayinc, J. M. Chavez Boggio, R. Haynes, M. M. Roth, U. Morgner, J. Neumann, D. Kracht, Broad-band cascaded four-wave mixing frequency comb centered around 1 µm. SPIE Photonics West: LASE2.-7. Februar, San Francisco , 8604-26 (2013)

C. Kolleck, A. Büttner, M. Ernst, M. Hunnekuhl, T. Hülsenbusch, A. Moalem, M. Priehs, D. Kracht, J. Neumann, Enhancement of the design of a pulsed UV Laser System for a Laser-Desorption Mass Spectrometer on Mars. International Conference on Space Optics (ICSO)9.-12. Oktober, Ajaccio (2012)

M. Steinke, D. Kracht, J. Neumann, P. Weßels, Gain dynamics in Er:Yb co-doped fiber amplifiers. Conference on Lasers and Electro-Optics (CLEO)8.-13. Juni, San Jose , JW2A.29 (2014)

M. Frede, D. Freiburg, R. Wilhelm, D. Kracht, High-Power, Direct Upper Laser Level Compared to Traditionally Nd:YAG Pumping. Advanced Solid-State Photonics (ASSP)28.-31. Januar, Vancouver , MB20 (2007)

J. Neumann, S. Hahn, R. Huß, R. Wilhelm, M. Frede, D. Kracht, P. Peuser, Compact, Highly Efficient, Passively Q-Switched Nd:YAG MOPA for Spaceborne Bepi Colombo Laser-Altimeter. Conference on Lasers and Electro-Optics (CLEO) and the Quantum Electronics and Laser Science Conference (QELS)21.-26. Mai, Long Beach , CWF1 (2006)

C. Veltcamp, S. Mebben, R. Wilhelm, M. Frede, D. Kracht, P. Fuhrberg, Diode End-pumped Core-doped Ceramic Yb:YAG Laser. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources31. August-5. September, Paris (2008)

R. Huß, R. Wilhelm, J. Neumann, D. Kracht, Passively Q-switched core-doped ceramic Nd:YAG laser with Sm:YAG cladding. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)17.-22. Juni, München , 85 (2007)

H. Sayinc, K. Hausmann, U. Morgner, J. Neumann, D. Kracht, Ultrashort pulse Yb fiber oscillator at 1064 nm by using a WDM cascade. SPIE Photonics West: LASE21.-26. Januar, San Francisco , 8237-102 (2012)

H. Sayinc, T. Theeg, S. Kanzelmeyer, J. Neumann, D. Kracht, Pulse energy scaling of ps to ns pulses in highly integrated fiber amplifiers. SPIE Photonics West: LASE21.-26. Januar, San Francisco , 8237-71 (2012)

M. Wysmolek, T. Theeg, H. Sayinc, J. Neumann, D. Kracht, All-fibre high power pump stripper manufactured by CO2 laser micro-structuring. SPIE Photonics West: LASE2.-7. Februar, San Francisco , 8601-26 (2013)

A. Büttner, U. Bünting, D. Wandt, U. Morgner, D. Kracht, J. Neumann, Ultrafast double-slab regenerative amplifier with combined gain spectra. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)14.-19. Juni, München , CF4.5 (2009)

A. Kornfeld, N. Bärsch, D. Kracht, A. Ostendorf, Integriert-optische Mikrostrukturen zur Signalverarbeitung in der Positionsmesstechnik. Kolloquium Mikrofertigung22.-23. November, Karlsruhe , 213-218 (2007)

M. Steinke, D. Kracht, J. Neumann, P. Weßels, 1.0µm co-seeded Er:Yb fiber amplifier with 50W output power at 1.5µm. Conference on Lasers and Electro-Optics (CLEO)9.-14. Juni, San Jose , CTu1K.7 (2013)

M. Frede, R. Wilhelm, D. Kracht, K. Dupré, L. Ackermann, High-Power Multi-segmented End-pumped Nd:YAG Laser. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, Incline Village , WE7 1-3 (2006)

J. Neumann, S. Hahn, R. Huß, D. Freiburg, R. Wilhelm, M. Frede, D. Kracht, Passively Q-switched Nd:YAG laser for spaceborne laser altimetry - Bepi Colombo (Mercury) Altimeter. ESA-NASA Working Meeting on Optoelectronics22. Juni, Noordwijk (2006)

F. Völkermeyer, F. Fischer, U. Stute, D. Kracht, Laser-based approach for bonded repair of carbon fiber reinforced plastics. Conference on Lasers in Manufacturing (LiM)23.-26. Mai, München , 537-542 (2011)

R. Huß, S. Mebben, R. Wilhelm, J. Neumann, D. Kracht, Polarization effects in end-pumped passively Q-switched Nd:YAG oscillators. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources31. August-5. September, Paris (2008)

H. Sayinc, J. Neumann, T. Theeg, D. Kracht, Pulse energy scaling of ps to ns pulses in highly integrated fiber amplifiers for micromachining. International Congress on Applications of Lasers & Electro Optics (ICALEO)23.-27. September, Anaheim , M1305 (2012)

M. Wysmolek, H. Sayinc, U. Morgner, J. Neumann, D. Kracht, Tm$^3$+-doped fiber amplifier optimized for picosecond pulse amplification. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources24.-29. August, Neuchâtel , WeP-T2-P-0 (2014)

A. Büttner, M. Ernst, M. Hunnekuhl, R. Kalms, L. Willemsen, P. Weßels, D. Kracht, J. Neumann, the MOMA laser team, Space-Qualified Pulsed DPSS-UV Laser for Martian Subsurface Exploration. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)23.-27. Juni, München (2019)

D. Kracht, M. Hildebrandt, L. Winkelmann, O. Puncken, B. Schulz, R. Wilhelm, M. Frede, Mode Selection in High-Power Single-Frequency Lasers. Laser Science16.-20. September, San Jose , LTuB1 (2007)

F. Stutzki, C. Gaida, M. Gebhardt, F. Jansen, A. Wienke, C. Jauregui, J. Limpert, A. Tünnermann, F. Fuchs, D. Wandt, D. Kracht, 88W sub-ps thulium-doped fiber CPA system. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources24.-29. August, Neuchâtel , ThA-T2-O-03 (2014)

M. Frede, R. Wilhelm, D. Kracht, C. Fallnich, F. Seifert, B. Willke, High-Power Fundamental Mode Single-Frequency Laser. Advanced Solid-State Lasers (ASSL)6.-9. Februar, Wien , MC2 (2005)

J. Neumann, R. Marwah, S. Mebben, M. Ernst, D. Kracht, Development of a compact-frequency quadrupled, passively Q-switched Nd:YAG laser system for harsh environments. SPIE Photonics West: LASE23.-28. Januar, San Jose , 7578-3 (2010)

D. Wandt, O. Prochnow, M. Schultz, A. Rühl, D. Kracht, High power lasers with multi-segmented crystals. EPS-QEOD Europhoton Conference on Solid State and Fiber Coherent Light Sources10.-15. September, Pisa , ThA2 (2006)

T. Hülsenbusch, T. Lang, C. Kolleck, J. Neumann, D. Kracht, Longitudinal mode behaviour of end-pumped, passively q-switched Nd:YAG lasers. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources29. August-3. September, Hamburg , WeP17 (2010)

H. Sayinc, T. Theeg, G. Pelegrina-Bonilla, K. Hausmann, H. Tünnermann, P. Weßels, J. Neumann, D. Kracht, New Pump and Signal Combiners. Specialty Optical Fibers & Applications (SOF)27.-31. Juli, Barcelona (2014)

M. Wysmolek, H. Sayinc, J. M. Chavez Boggio, R. Haynes, M. M. Roth, U. Morgner, J. Neumann, D. Kracht, Broadband Cascaded Four-Wave Mixing Generation in a Photonic Crystal Fibre at 1µm. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources26.-31. August, Stockholm , TuP.24 (2012)

E. Chatzizyrli, N. Tinne, R. Lachmayer, J. Neumann, D. Kracht, Opto-thermal simulation model for optimizing laser-excited remote phosphor systems. SPIE Optical Systems Design14.-17. Mai, Frankfurt am Main (2018)

D. Kracht, M. Frede, R. Wilhelm, C. Fallnich, High-power end-pumped composite ceramic Nd:YAG laser. Conference on Lasers and Electro-Optics (CLEO)16.-21. Mai, San Francisco , CTuT4 (2004)

S. Hochheim, M. Steinke, P. Wessels, O. de Varona Ortega, J. Koponen, T. Lowder, S. Novotny, J. Neumann, D. Kracht, Single-frequency chirally-coupled-core all-fiber amplifier with 100 W in a linearly-polarized TEM00-mode. SPIE Photonics West: LASE01.-06. Februar, San Francisco (2020)

D. Freiburg, R. Wilhelm, M. Frede, D. Kracht, K. Dupré, L. Ackermann, Power Scaling of Diode End-Pumped Nd:YAG Lasers by Applying Dopant Concentration Profiles. Conference on Lasers and Electro-Optics (CLEO)22.-27. Mai, Baltimore , 171-173 (2006)

J. Neumann, R. Marwah, S. Mebben, M. Ernst, C. Kolleck, A. Moalem, D. Kracht, Development of a compact-frequency quadrupled, passively Q-switched Nd:YAG laser system for harsh environments. SPIE Photonics West: LASE24.-29. Januar, San Jose , 7193-2 (2009)

D. Wandt, O. Prochnow, M. Schultz, A. Rühl, D. Kracht, Stretched-pulse and self-similar operation of an ultrafast Ytterbium-doped fiber ring laser. EPS-QEOD Europhoton Conference on Solid State and Fiber Coherent Light Sources10.-15. September, Pisa (2006)

T. Hülsenbusch, A. Büttner, M. Ernst, T. Lang, C. Kolleck, D. Kracht, J. Neumann, Mode fluctuations in end-pumped passively Q-switched solid-state lasers. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, San Diego , AT4A.26 (2012)

H. Sayinc, U. Bünting, P. Weßels, D. Wandt, U. Morgner, D. Kracht, Ultrafast Yb:KYW Thin Disk Regenerative Amplifier with Combined Gain Spectra and 200 µJ Pulse Energy. EPS-QEOD Europhoton Conference on Solid State, Fibre, and Waveguide Coherent Light Sources31. August-5. September, Paris , TUoB7 (2008)

M. Wysmolek, M. Steinke, J. Neumann, D. Kracht, Versatile monolithic 2-micron laser systems. SPIE Photonics West: LASE27. Januar - 01. Februar, San Francisco (2018)

E. Chatzizyrli, N. Tinne, R. Lachmayer, J. Neumann, D. Kracht, Multiphysics simulation strategy for the optimization of laser-excited remote phosphor systems. 119. Jahrestagung der DGaO22.-26. Mai, Aalen (2018)

D. Kracht, H. Sayinc, S. Yilmaz, M. Wysmolek, K. Hausmann, C. Ottenhues, D. Wandt, A. Wienke, J. Neumann, Innovative Laser Sources Operating Around 2 µm. International Conference on Photonic Technologies (LANE)19.-22. September, Fürth (2016)

T. Theeg, H. Sayinc, J. Neumann, D. Kracht, Brillouin-gain spectra of a monolithic counter-pumped single-frequency fiber amplifier. SPIE Photonics West: LASE1.-6. Februar, San Francisco , 8961-105 (2014)

D. Freiburg, R. Wilhelm, M. Frede, D. Kracht, K. Dupré, L. Ackermann, End-pumped Nd:YAG Laser Applying a Novel Laser Crystal with Longitudinal Hyperbolic Dopant Distribution. Advanced Solid-State Photonics (ASSP)29. Januar-1. Februar, Incline Village , WE6 1-3 (2006)

J. Neumann, S. Hahn, R. Huß, D. Freiburg, R. Wilhelm, M. Frede, D. Kracht, Passively Q-Switched Nd:YAG MOPA for Spaceborne Altimetry. International Conference on High Power Laser Beams (HPLB)3.-8. Juli, Nizhny Novgorod , 82-83 (2006)

P. Weßels, A. Büttner, M. Ernst, M. Hunnekuhl, R. Kalms, L. Willemsen, D. Kracht, J. Neumann, the MOMA laser team, Laser flight model for the MOMA instrument of the ExoMars 2020 mission. SPIE Photonics West: LASE02.-07. Februar, San Francisco (2019)

H. Hundertmark, D. Kracht, M. Engelbrecht, D. Wandt, C. Fallnich, N. Haverkamp, H. R. Telle, Sub-85 fs mode-locked Erbium fiber oscillator with tunable repetition rate. Conference on Lasers and Electro-Optics (CLEO)16.-21. Mai, San Francisco , CMO5 (2004)

M. Schimek, A. Springer, S. Kaierle, D. Kracht, V. Wesling, Laser-welded dissimilar steel-aluminum seams for automotive lightweight construction. International Conference on Photonic Technologies (LANE)12.-15. November, Fürth , 43-50 (2012)

M. Wysmolek, A. M. Sincore, R. Ryan, A. Abdulfattah, L. Shah, H. Sayinc, J. Neumann, S. Lamrini, M. C. Richardson, U. Morgner, D. Kracht, Polarized picosecond pulses amplification in a Tm-doped large mode-area photonic crystal fiber amplifier. SPIE Photonics West: LASE7.-12. Februar, San Francisco , 9344-60 (2015)

E. Chatzizyrli, N. Tinne, R. Lachmayer, J. Neumann, D. Kracht, Modeling of photoluminescence in laser-based lighting systems. Photonics Prague28.-30. August, Prag (2017)

D. Kracht, M. Schimek, Nutzung lokaler Effekte von Schweißnähten bei laserbasierten Fügekonzepten für hochfeste lastübertragende Strukturmodule. Industriekolloquium, Abschlusskolloquium SFB 6752.-3. November, Clausthal-Zellerfeld , 111-120 (2011)

T. Theeg, H. Sayinc, J. Neumann, L. Overmeyer, D. Kracht, Side Pumping Scheme for All-Fiber Counter-Pumping of High Power Single-Frequency Fiber Amplifiers. Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe-EQEC)12.-16. Mai, München , CJ-1.2 SUN (2013)

D. Freiburg, M. Frede, R. Wilhelm, D. Kracht, C. Fallnich, High-Power End-Pumped Multi-Segmented Nd:YAG Laser. Advanced Solid-State Lasers (ASSL)6.-9. Februar, Wien , MF49 (2005)

J. Neumann, R. Huß, C. Kolleck, D. Kracht, Energy scaling of passively Q-switched lasers in the mJ-range. International Conference on Space Optics (ICSO)7.-10. Oktober, Teneriffa , PS1.29 (2014)

P. Weßels, A. Büttner, M. Ernst, M. Hunnekuhl, R. Kalms, L. Willemsen, D. Kracht, J. Neumann, the MOMA laser team, UV-DPSS Laser Flight Model for the MOMA Instrument of the ExoMars 2020 Mission. International Conference on Space Optics (ICSO)09.-12. Oktober, Chania (2018)

H. Hundertmark, D. Kracht, M. Engelbrecht, D. Wandt, C. Fallnich, N. Haverkamp, H. R. Telle, Coherent supercontinuum generation with an Erbium-fiber oscillator-amplifier system in an extruded SF6-PCF. Nonlinear Optics: Materials, Fundamentals and Applications2.-6. August, Waikoloa , ThC1 (2004)

Bücher

D. Kracht, S. Kaierle, A. Springer, O. Seffer, R. Lahdo, B. Nacke, H. Schülbe, J. Neumeyer, P. Schaumann, M. Collmann, Prozesssicheres und leistungsfähiges Fügen von hochfesten Feinkornbaustählen durch ein Hybridschweißverfahren mit integrierter Vorwärmung. Düsseldorf Verlag und Vertriebsgesellschaft mbH (2015)

O. Seffer, R. Lahdo, A. Springer, S. Kaierle, D. Kracht, Schweißen von Dickblechen mit brillanten Laserstrahlquellen (HYBRILAS) – Grundlagenuntersuchungen für Stahl und Aluminium. Hannover (2014)

Buchkapitel

Y. Wessarges, C. Hoff, J. Hermsdorf, D. Kracht, Laseradditive Fertigung dünnwandiger Magnesiumbauteile. In: Konstruktion für die Additive Fertigung 2018. Berlin, Heidelberg Springer Vieweg (2019)

G. Hohenhoff, H. Meyer, O. Suttmann, T. Ripken, K. Obata, D. Kracht, L. Overmeyer, Additive Serienfertigung. 1Berlin Springer (2018)

M. Emons, G. Palmer, M. Schultze, U. Morgner, H. Sayinc, D. Wandt, D. Kracht, High Energy/High Repetition Rate Laser Pulses from Yb Based Solid State Oscillators with Cavity-Dumping and Regenerative Amplifiers. In: Ultrashort Pulse Laser Technology. 1Cham Springer International Publishing Switzerland, 358 (2015)

Anderes berufliches Engagement:

Herr Dr. Kracht ist Vorstandsmitglied im Hannoverschen Zentrum für Optische Technologien (HOT)
Mitglied im Centre for Quantum Engineering and Space-Time Research (QUEST)
Mitglied im Clausthaler Zentrum für Materialtechnik

nach oben

Vorlesungen und Seminare:

Vorlesung "Grundlagen und Aufbau von Laserstrahlquellen"
an der Leibniz Universität Hannover

nach oben

Dr. rer. nat. Dietmar Kracht

LZH-Veröffentlichungen

Zeitschriftenbeiträge (reviewed)

Zeitschriftenaufsätze (non-reviewed)

Konferenzbeiträge

Bücher

Buchkapitel

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