Picosecond laser damage of fused silica at 355 nm

Meng Xiangjie; Liu Hongjie; Wang Fang; Ren Weiyi; Zhang Zhen; An Xinyou; Huang Jin; Jiang Xiaodong; Wu Weidong

doi:10.3788/HPLPB20132509.2247

Volume 25 Issue 09

Jul. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(09): 2247-2251

Zhu Sitao, Yi Chaolong, Chen Changhua, et al. Radiation mechanism analysis and optimized design of TEM horn antennas[J]. High Power Laser and Particle Beams, 2013, 25: 2368-2372. doi: 10.3788/HPLPB20132509.2368

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Meng Xiangjie, Liu Hongjie, Wang Fang, et al. Picosecond laser damage of fused silica at 355 nm[J]. High Power Laser and Particle Beams, 2013, 25: 2247-2251. doi: 10.3788/HPLPB20132509.2247

Citation:

Meng Xiangjie, Liu Hongjie, Wang Fang, et al. Picosecond laser damage of fused silica at 355 nm[J]. High Power Laser and Particle Beams, 2013, 25: 2247-2251. doi: 10.3788/HPLPB20132509.2247

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Picosecond laser damage of fused silica at 355 nm

doi: 10.3788/HPLPB20132509.2247

1.
Institute of Theoretical Physics,China West Normal University,Nanchong 637009,China;
2.
Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621900,China

Received Date: 2012-12-02
Rev Recd Date: 2013-04-23
Publish Date: 2013-07-17

Abstract

Abstract

This paper studies the initiated damage threshold, the damage morphology and the subsequent damage growth on fused silicas input-surface and exit-surface under picosecond laser irradiation at 355 nm. Defects induced fluorescence on surface of the optical component is observed. The results demonstrate a significant dependence of the initiated damage on pulse duration and surface defects, and that of the damage growth on self-focusing, sub-surface defects. The damage-threshold is 3.98 J/cm2 of input surface and 2.91 J/cm2 of exit surface. The damage morphologies are quite different between input surface and exit surface. Slow growth behavior appears for the diameter of exit-surface and linear growth one for the depth of exit-surface in the lateral side of damage site with the increase of shot number. Defects have changed obviously compared with nanosecond laser damage in the damage area. Several main reasons such as electric intensification and self-focusing for the observed initiated damage and damage growth behavior are discussed.
- fused silica,
- picosecond laser,
- laser-induced damage,
- self-focusing

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