| 熔石英表面加工引入金属微粒的三倍频激光损伤机制 |
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| 引用本文： | 欧阳升,刘志超,许乔. 熔石英表面加工引入金属微粒的三倍频激光损伤机制[J]. 强激光与粒子束, 2011, 23(9). DOI: 10.3788/HPLPB20112309.2423 |
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| 作者姓名： | 欧阳升 刘志超 许乔 |
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| 作者单位： | 成都精密光学工程研究中心， 成都 610041 |
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| 摘 要： | 以材料表面金属元素吸收作为主线建立熔石英表面损伤模型，理论模拟了激光辐照过程中金属微粒周围温度场的变化，模型结果显示，在脉冲时间内微粒周围温度很快达到损伤判据给出的临界温度。通过激光损伤实验，对比刻蚀与未刻蚀样品之间的损伤密度，证实了金属微粒含量与损伤密度存在密切联系。计算结果和实验结果均表明：金属微粒是熔石英激光损伤中重要的吸收前驱体，极大降低了熔石英材料的表面抗损伤性能。
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| 关 键 词： | 激光损伤 熔石英 三倍频 吸收体 |
| 收稿时间： | 1900-01-01; |
Mechanism of third-harmonic laser-induced damage on fused silica surface with processing-introduced metal absorbers |
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| Ouyang Sheng,Liu Zhichao,Xu Qiao. Mechanism of third-harmonic laser-induced damage on fused silica surface with processing-introduced metal absorbers[J]. High Power Laser and Particle Beams, 2011, 23(9). DOI: 10.3788/HPLPB20112309.2423 |
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| Authors: | Ouyang Sheng Liu Zhichao Xu Qiao |
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| Affiliation: | (Chengdu Fine Optical Engineering Research Center, Chengdu 610041, China) |
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| Abstract: | A laser-induced damage model has been built for fused silica surface with metal particles as absorbers,which are introduced by processing.The evolution of the temperature field around absorbers during laser irradiation was simulated,and shows that the temperature at the hottest point will soon reach the critical temperature of damage in a pulse time.Damage densities of samples with and without etching have been experimentally compared,revealing the strong correlation between metal particles amount and damag... |
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| Keywords: | laser-induced damage fused silica third harmonic absorbers |
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