Explaining laser-induced damage behavior of fused silica in a large-aperture laser using a small-aperture damage test

Fuquan Li; Wanqing Huang; Wei Han; Bin Feng; Yong Xiang; Feng Jing

doi:10.1117/12.866331

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29 November 2010 Explaining laser-induced damage behavior of fused silica in a large-aperture laser using a small-aperture damage test

Fuquan Li, Wanqing Huang, Wei Han, Bin Feng, Yong Xiang, Feng Jing

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Proceedings Volume 7842, Laser-Induced Damage in Optical Materials: 2010; 78421J (2010) https://doi.org/10.1117/12.866331
Event: Laser Damage Symposium XLII: Annual Symposium on Optical Materials for High Power Lasers, 2010, Boulder, Colorado, United States

Abstract

Laser-induced damage is a key lifetime limiter for optics in large laser facilities. After tested on a large-aperture high-power laser facility, a damaged fused silica component is disassembled and conditioned to receive damage test on a small-aperture laser. The damage threshold and growth behavior show the corners on the component are less damage resistant. The acid etch on corner has not effectively increased the damage threshold but lowered the damage growth coefficient. A statistic-based model is presented to extrapolate the threshold data in small-aperture test to predict the damage threshold under functional conditions.

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Fuquan Li, Wanqing Huang, Wei Han, Bin Feng, Yong Xiang, and Feng Jing "Explaining laser-induced damage behavior of fused silica in a large-aperture laser using a small-aperture damage test", Proc. SPIE 7842, Laser-Induced Damage in Optical Materials: 2010, 78421J (29 November 2010); https://doi.org/10.1117/12.866331

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