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Proceedings Paper

CW-laser-induced thermal and mechanical damage in optical materials
Author(s): Hui Gong; Cheng Fu Li; Zhong Ya Li
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Paper Abstract

In this paper CW laser induced damage in optical materials were investigated using CW-CO2 laser. Inhomogeneous absorption will result in thermal stress in optical materials, which will induce crack, fusion of optical materials. These damages are related to microcracks and thermal properties of materials. It is shown that surface microcracks of optical materials is very important factor of CW laser induced damage, and the size of optical materials also has influence on damage thresholds. It is provided that CW laser induced damage mechanisms are thermal-stress accumulation damage and thermal-shock-stress damage. In addition, chemical etching was used to improve the damage resistance of optical materials, and CW laser induced damage thresholds of optical materials largely increased after 5 percent HCl solution etching.

Paper Details

Date Published: 7 April 1999
PDF: 8 pages
Proc. SPIE 3578, Laser-Induced Damage in Optical Materials: 1998, (7 April 1999); doi: 10.1117/12.344414
Show Author Affiliations
Hui Gong, Shanghai Institute of Optics and Fine Mechanics (China)
Cheng Fu Li, Shanghai Institute of Optics and Fine Mechanics (China)
Zhong Ya Li, Shanghai Institute of Optics and Fine Mechanics (China)

Published in SPIE Proceedings Vol. 3578:
Laser-Induced Damage in Optical Materials: 1998
Gregory J. Exarhos; Arthur H. Guenther; Mark R. Kozlowski; Keith L. Lewis; M. J. Soileau, Editor(s)

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