Abstract

Femtosecond laser induced damage threshold (LIDT) has been widely examined at Hz and kHz repetition rates, including some comparative studies, too, see [1-3] and references therein. Recently, high pulse energy femtosecond laser systems with high repetition rates (100 kHz…MHz) advanced, such as femtosecond fiber chirped pulse amplification systems [4] and passively mode locked Yb thin disc lasers [5]. Therefore, direct comparison between kHz and MHz LIDT values has become of great importance. One study was published recently about direct comparison between kHz and MHz repetition rates with ps pulses [6]. Here, we show results of a systematic repetition rate comparison with fs pulses.

© 2015 IEEE