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Proceedings Paper

Development of high damage threshold optics for petawatt-class short-pulse lasers
Author(s): Brent C. Stuart; Michael D. Perry; Robert D. Boyd; Jerald A. Britten; Bruce W. Shore; Michael D. Feit; Alexander M. Rubenchik
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Paper Abstract

We report laser-induced damage threshold measurements on pure and multilayer dielectrics and gold-coated optics at 1053 and 526 nm for pulse durations, (tau) , ranging from 140 fs to 1 ns. Damage thresholds of gold coatings are limited to 500 mJ/cm2 in the subpicosecond range from 1053-nm pulses. In dielectrics, qualitative differences in the morphology of damage and a departure from the diffusion-dominated (tau) 1/2 scaling indicate that damage results from plasma formation and ablation for (tau) <EQ 10 ps and from conventional melting and boiling for (tau) > 50 ps. A theoretical model based on electron production via multiphoton ionization, Joule heating, and collisional (avalanche) ionization is in quantitative agreement with both the pulsewidth and wavelength scaling of experimental results.

Paper Details

Date Published: 10 April 1995
PDF: 13 pages
Proc. SPIE 2377, Generation, Amplification, and Measurement of Ultrashort Laser Pulses II, (10 April 1995); doi: 10.1117/12.206422
Show Author Affiliations
Brent C. Stuart, Lawrence Livermore National Lab. (United States)
Michael D. Perry, Lawrence Livermore National Lab. (United States)
Robert D. Boyd, Lawrence Livermore National Lab. (United States)
Jerald A. Britten, Lawrence Livermore National Lab. (United States)
Bruce W. Shore, Lawrence Livermore National Lab. (United States)
Michael D. Feit, Lawrence Livermore National Lab. (United States)
Alexander M. Rubenchik, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 2377:
Generation, Amplification, and Measurement of Ultrashort Laser Pulses II
Christopher P. P. Barty; Frank W. Wise, Editor(s)

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