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High repetition rate, wavelength-tunable mid-IR source driven by ps-pulses from a Ho:YLF amplifier at 2 µm

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  • High repetition rate, wavelength-tunable mid-IR source driven by ps-pulses from a Ho:YLF amplifier at 2 µm
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)
Publication type: Journal Article (non-reviewed)

Abstract

The generation of ultrashort pulses in the mid-infrared (mid-IR) spectral region is highly demanded for a multitude of applications such as spectroscopy, materials processing, or biomolecular and chemical sensing. For many of the aforementioned applications a high pulse repetition frequency (PRF) is desirable, since it reduces measurement time and improves spectroscopic signal-to-noise ratio. However, most of the ultrafast mid-IR sources are limited to a PRF below 10 kHz as they rely on regenerative amplifier-based pump sources for optical parametric chirped pulse amplification (OPCPA) [1-3]. The herein applied Pockels cell represents a bottleneck for PRF tuning usually below 10 kHz. Just recently, we presented a 2-µm, sub-10 ps pulse laser system with millijoule-level pulse energy, which is in principle not limited by the PRF [4]. This laser system benefits from its simplified, compact CPA-free architecture and high efficiency.

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