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

Damage to extreme-ultraviolet Sc/Si multilayer mirrors exposed to intense 46.9-nm laser pulses

M. Grisham, G. Vaschenko, C. S. Menoni, J. J. Rocca, Yu. P. Pershyn, E. N. Zubarev, D. L. Voronov, V. A. Sevryukova, V. V. Kondratenko, A. V. Vinogradov, and I. A. Artioukov
Opt. Lett. 29(6) 620-622 (2004)

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)

Extracting the distribution of laser damage precursors on fused silica surfaces for 351 nm, 3 ns laser pulses at high fluences (20-150 J/cm²)

Ted A. Laurence, Jeff D. Bude, Sonny Ly, Nan Shen, and Michael D. Feit
Opt. Express 20(10) 11561-11573 (2012)

Evaluation of femtosecond laser damage to gold pulse compression gratings fabricated by magnetron sputtering and e-beam evaporation

Leilei Wang, Fanyu Kong, Zhilin Xia, Yunxia Jin, Haopeng Huang, Linxin Li, Junming Chen, Yun Cui, and Jianda Shao
Appl. Opt. 56(11) 3087-3095 (2017)

Study on effective cleaning of gold layer from fused silica mirrors using nanosecond-pulsed Nd:YAG laser

Ambar Choubey, Amol Singh, M. H. Modi, B. N. Upadhyaya, G. S. Lodha, and S. M. Oak
Appl. Opt. 52(31) 7540-7548 (2013)