Investigation of high-power laser beam-, plasma-, debris-, and shrapnel-induced damage of optical coatings on the HELEN laser facility

Joe C. Watson; James E. Andrew; Nicholas J. Bazin

doi:10.1117/12.472057

30 May 2003 Investigation of high-power laser beam-, plasma-, debris-, and shrapnel-induced damage of optical coatings on the HELEN laser facility

Joe C. Watson, James E. Andrew, Nicholas J. Bazin

Author Affiliations +

Proceedings Volume 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization; (2003) https://doi.org/10.1117/12.472057
Event: XXXIV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, 2002, Boulder, CO, United States

Abstract

This paper discusses laser beam, debris and shrapnel induced damage on optical components of a pulsed high power Neodymium laser system. Quantitative and qualitative investigations of the nature of laser damage on optical components and coatings that form the laser system are presented as well as investigations of debris and shrapnel induced damage on sol gel anti reflective coated optical components that surround the taget. In addition laser target debris and shrapnel induced damaged on sol gel thin film coatings have been studied where optical transmission was measured using an Ultra Violet Visible spectrophotometer before and after coated optics were used in the system and experienced damage. The problem with understanding causes of each type of damage is difficult because many processes occur simultaneously in an operational target chamber. Also investigated was the effect of low irradiance laser light at removing debris, and the rate of laser damage growth on contaminated HELEN optics, with number of laser shots.

Citation Download Citation

Joe C. Watson, James E. Andrew, and Nicholas J. Bazin "Investigation of high-power laser beam-, plasma-, debris-, and shrapnel-induced damage of optical coatings on the HELEN laser facility", Proc. SPIE 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization, (30 May 2003); https://doi.org/10.1117/12.472057

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