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Proceedings Paper

Damage thresholds in laser-irradiated optical materials
Author(s): Franck Guignard; Michel L. Autric; Vincent Baudinaud
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Paper Abstract

An experimental study on the damage induced by laser irradiation on different materials, borosilicate glass, fused silicate, molded and stretched polymethylmethacrylate (PMMA), has been performed. The irradiation source is a 1KL pulsed cold cathode electron gun preionized TEA CO2 laser. Damage mechanisms are controlled by the in-depth absorption of the 10.6 micrometers radiation according to the Beer-Lambert law. PMMA is damaged following a boiling process. Stretched PMMA is fractured first, releasing stresses, then boiled like molded PMMA at a higher energy. BK7 crazed after the irradiation due to thermomechanical stresses, silicate melt and vaporized. Optical damages have been characterized by measuring the contrast transfer function through the irradiated samples.

Paper Details

Date Published: 13 May 1997
PDF: 8 pages
Proc. SPIE 2966, Laser-Induced Damage in Optical Materials: 1996, (13 May 1997); doi: 10.1117/12.274247
Show Author Affiliations
Franck Guignard, IRPHE (France)
Michel L. Autric, IRPHE (France)
Vincent Baudinaud, Aerospatiale (France)

Published in SPIE Proceedings Vol. 2966:
Laser-Induced Damage in Optical Materials: 1996
Harold E. Bennett; Arthur H. Guenther; Mark R. Kozlowski; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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