Mitigating laser induced damage in fused silica with CO<sub>2</sub> laser

Li Xibin; Liu Chunming; Wang Haijun; Yuan Xiaodong; He Shaobo; Xiang Xia; Zheng Wanguo

Volume 24 Issue 07

Jun. 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(07): 1757-1760

lou li-fei, yang yin-tang, chai chang-chun, et al. Total dose radiation effect on PZT ferroelectric material[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

Li Xibin, Liu Chunming, Wang Haijun, et al. Mitigating laser induced damage in fused silica with CO₂ laser[J]. High Power Laser and Particle Beams, 2012, 24: 1757-1760.

lou li-fei, yang yin-tang, chai chang-chun, et al. Total dose radiation effect on PZT ferroelectric material[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

Li Xibin, Liu Chunming, Wang Haijun, et al. Mitigating laser induced damage in fused silica with CO₂ laser[J]. High Power Laser and Particle Beams, 2012, 24: 1757-1760.

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Mitigating laser induced damage in fused silica with CO₂ laser

1.
Research Center of Laser Fusion,CAEP,P.O.Box 919-988-5,Mianyang 621900,China;
2.
School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China

Publish Date: 2012-07-15

Abstract

Abstract

Laser induced damage sites in fused silica were irradiated by a galvanometer scanned CO2 laser. Most damage sites are completely repaired (no ablation deposits, air bubbles and cracks) and the largest is 500 m in diameter. Compared with localized mitigation, scanning mitigation can repair larger-sized damage, and bring about smaller surface deformation and lower thermal stress. The damage testing at 355 nm shows that, 80% of the mitigated damage sites can withstand the laser power density up to the initial damage threshold of the substrate.
- galvanometer system,
- co2 laser,
- localized mitigation,
- damage threshold

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