CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Laser-Induced Damage Growth on Larger-Aperture Fused Silica Optical Components at 351nm |
HUANG Wan-Qing, HAN Wei, WANG Fang, XIANG Yong, LI Fu-Quan, FENG Bin, JING Feng, WEI Xiao-Feng, ZHENG Wan-Guo, ZHANG Xiao-Min |
Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900 |
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Cite this article: |
HUANG Wan-Qing, HAN Wei, WANG Fang et al 2009 Chin. Phys. Lett. 26 017901 |
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Abstract Laser-induced damage is a key lifetime limiter for optics in high-power laser facility. Damage initiation and growth under 351nm high-fluence laser irradiation are observed on larger-aperture fused silica optics. The input surface of one fused silica component is damaged most severely and an explanation is presented. Obscurations and the area of a scratch on it are found to grow exponentially with the shot number. The area of damage site grows linearly. Micrographs of damage sites support the micro-explosion damage model which could be used to qualitatively explain the phenomena.
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Keywords:
79.20.Ds
42.70.Ce
61.72.J-
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Received: 21 October 2008
Published: 24 December 2008
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