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Proceedings Paper

Investigation of high-power laser beam-, plasma-, debris-, and shrapnel-induced damage of optical coatings on the HELEN laser facility
Author(s): Joe C. Watson; James E. Andrew; Nicholas J. Bazin
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Paper 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.

Paper Details

Date Published: 30 May 2003
PDF: 12 pages
Proc. SPIE 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization, (30 May 2003); doi: 10.1117/12.472057
Show Author Affiliations
Joe C. Watson, Atomic Weapons Establishment plc (United Kingdom)
James E. Andrew, Atomic Weapons Establishment plc (United Kingdom)
Nicholas J. Bazin, Atomic Weapons Establishment plc (United Kingdom)


Published in SPIE Proceedings Vol. 4932:
Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization
Gregory J. Exarhos; Arthur H. Guenther; Norbert Kaiser; Keith L. Lewis; M. J. Soileau; Christopher J. Stolz; Adolf Giesen; Horst Weber, Editor(s)

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