S. Nolte
C. Momma
H. Jacobs
A. Tünnermann
B. N. Chichkov
B. Wellegehausen
H. Welling

Ablation of metals by ultrashort laser pulses

Journal of the Optical Society of America B - Optical Physics
10
14
2716-2722
1997
Type: Zeitschriftenaufsatz (reviewed)
Abstract
Ablation of metal targets by Ti:sapphire laser radiation is studied. The ablation depth per pulse is measured for laser pulse durations between 150 fs and 30 ps and fluences ranging from the ablation threshold; 0.1 J/cm2 up to 10 J/cm2. Two different ablation regimes are observed for the first time. In both cases the ablation depth per pulse depends logarithmically on the laser fluence. A simple theoretical model for a qualitative description of the experimental results is presented.