Laser-Induced Damage Growth on Larger-Aperture Fused Silica Optical Components at 351nm
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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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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. Laser-Induced Damage Growth on Larger-Aperture Fused Silica Optical Components at 351nm[J]. Chin. Phys. Lett., 2009, 26(1): 017901. DOI: 10.1088/0256-307X/26/1/017901
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. Laser-Induced Damage Growth on Larger-Aperture Fused Silica Optical Components at 351nm[J]. Chin. Phys. Lett., 2009, 26(1): 017901. DOI: 10.1088/0256-307X/26/1/017901
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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. Laser-Induced Damage Growth on Larger-Aperture Fused Silica Optical Components at 351nm[J]. Chin. Phys. Lett., 2009, 26(1): 017901. DOI: 10.1088/0256-307X/26/1/017901
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. Laser-Induced Damage Growth on Larger-Aperture Fused Silica Optical Components at 351nm[J]. Chin. Phys. Lett., 2009, 26(1): 017901. DOI: 10.1088/0256-307X/26/1/017901
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