Surface damage of extreme-ultraviolet gratings exposed to high-energy 20-fs laser pulses

Abstract

The damage fluences of gratings for diffraction of ultraviolet radiation, which are used in high-order harmonic generation experiments, have been measured with respect to the fundamental laser beam radiation. We have tested gold and platinum coatings of 40- and 50-nm thickness, respectively, deposited onto fused-silica substrates, after irradiation of high-energy, spatially filtered, 20-fs laser pulses at 780 nm. The damage appears at a fluence of ∼0.3 J cm^-2 for gold and at a fluence of ∼0.4 J cm^-2 for platinum. Scanning electron microscopy of the irradiated regions revealed different damaging mechanisms for the two coatings.

© 1999 Optical Society of America

Femtosecond laser damage threshold of pulse compression gratings for petawatt scale laser systems

Patrick Poole, Simeon Trendafilov, Gennady Shvets, Douglas Smith, and Enam Chowdhury
Opt. Express 21(22) 26341-26351 (2013)

The role of defects in laser-induced modifications of silica coatings and fused silica using picosecond pulses at 1053 nm: I. Damage morphology

S. Ly, N. Shen, R. A. Negres, C. W. Carr, D. A. Alessi, J. D. Bude, A. Rigatti, and T. A. Laurence
Opt. Express 25(13) 15161-15178 (2017)

Localized CO₂ laser damage repair of fused silica optics

E. Mendez, K. M. Nowak, H. J. Baker, F. J. Villarreal, and D. R. Hall
Appl. Opt. 45(21) 5358-5367 (2006)

Investigation of ablation thresholds of optical materials using 1-µm-focusing beam at hard X-ray free electron laser

Takahisa Koyama, Hirokatsu Yumoto, Yasunori Senba, Kensuke Tono, Takahiro Sato, Tadashi Togashi, Yuichi Inubushi, Tetsuo Katayama, Jangwoo Kim, Satoshi Matsuyama, Hidekazu Mimura, Makina Yabashi, Kazuto Yamauchi, Haruhiko Ohashi, and Tetsuya Ishikawa
Opt. Express 21(13) 15382-15388 (2013)

Laser damage mechanisms in conductive widegap semiconductor films

Jae-Hyuck Yoo, Marlon G. Menor, John J. Adams, Rajesh N. Raman, Jonathan R. I. Lee, Tammy Y. Olson, Nan Shen, Joonki Suh, Stavros G. Demos, Jeff Bude, and Selim Elhadj
Opt. Express 24(16) 17616-17634 (2016)