Abstract

We performed femtosecond laser-induced damage threshold (fs LIDT) measurements with substantially different repetition rate Ti:sapphire laser systems: a 1 kHz regenerative amplifier and a 4.3 MHz long-cavity oscillator. All other pulse parameters are kept the same. Comparative measurements of a dielectric high reflector, a chirped mirror, and metallic mirrors show at least a factor of 2.7 lower fs LIDT at megahertz repetition rates. We attribute this to thermally assisted damage mechanisms supported by complex heat transfer simulations.

© 2015 Optical Society of America

Femtosecond damage resistance of femtosecond multilayer and hybrid mirrors

Viktória Csajbók, Lőrinc Szikszai, Benedek J. Nagy, and Péter Dombi
Opt. Lett. 41(15) 3527-3530 (2016)

Thermal accumulation at kilohertz repetition rates inside fused silica under ultrafast laser irradiation

Xiao Jia and Xin Zhao
Opt. Lett. 45(13) 3390-3393 (2020)

Femtosecond laser pulse shaping at megahertz rate via a digital micromirror device

Chenglin Gu, Yina Chang, Dapeng Zhang, Jiyi Cheng, and Shih-Chi Chen
Opt. Lett. 40(17) 4018-4021 (2015)

Metal dielectric gratings with high femtosecond laser damage threshold of twice as much as that of traditional gold gratings

Jiao Xu, Xi Zou, Junming Chen, Yibi Zhang, Yonglu Wang, Yunxia Jin, Fanyu Kong, Hongchao Cao, Peng Chen, and Jianda Shao
Opt. Lett. 44(11) 2871-2874 (2019)

Laser-induced damage thresholds and mechanism of silica glass induced by ultra-short soft x-ray laser pulse irradiation

Katsuhiro Mikami, Masahiko Ishino, Thanh-Hung Dinh, Shinji Motokoshi, Noboru Hasegawa, Akira Kon, Yuichi Inubushi, Shigeki Owada, Hiroo Kinoshita, and Masaharu Nishikino
Opt. Lett. 45(8) 2435-2438 (2020)