| 毫秒激光辐照光学元件的多杂质损伤模型 |
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| 引用本文： | 王斌,邓超,江修娥,潘云香,莫绪涛.毫秒激光辐照光学元件的多杂质损伤模型[J].激光与红外,2018,48(8):978-984. |
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| 作者姓名： | 王斌 邓超 江修娥 潘云香 莫绪涛 |
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| 作者单位： | 1.安徽工业大学数理科学与工程学院,安徽 马鞍山 243032;2.南京理工大学理学院,江苏 南京 210094 |
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| 基金项目： | 安徽省自然科学基金青年项目(No.1708085QF145)；安徽省省级SRTP项目(No.201710360348)；国家自然科学基金青年项目(No.11504003)资助 |
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| 摘 要： | 建立了毫秒长脉冲激光辐射透明光学元件的多杂质加热模型,对涂有SiO2/Al2O3增透薄膜的K9玻璃光学元件在毫秒激光辐照下的温度场和热应力场进行了数值模拟,分析了温度场和应力场分布的发展历程。结果表明在毫秒激光作用下,多个微小杂质团簇作为吸收热源能够导致毁灭性的损伤,且损伤同时出现在元件的前后表面,前表面为温度与应力效应共同作用,后表面为应力效应主导。数值模拟结果与实验损伤形貌观察结果吻合较好。
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| 关 键 词： | 长脉冲 激光损伤 温度场 应力场 多杂质 |
Multi-inclusion model of optical components damaged by millisecond laser irradiation |
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| WANG Bin,DENG Chao,JIANG Xiu-e,PAN Yun-xiang,MO Xu-tao.Multi-inclusion model of optical components damaged by millisecond laser irradiation[J].Laser & Infrared,2018,48(8):978-984. |
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| Authors: | WANG Bin DENG Chao JIANG Xiu-e PAN Yun-xiang MO Xu-tao |
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| Affiliation: | 1.School of Mathematics and Physics,Anhui University of Technology,Maanshan 243032,China;2.School of Science,Nanjing University of Science and Technology,Nanjing 210094,China |
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| Abstract: | A multiple inclusion model of transparent optical components irradiated by millisecond long pulse laser was established. The temperature and stress field distribution and process of a K9 based component coated with SiO2/Al2O3 anti-reflection films irradiated by millisecond laser were numerical calculated and analyzed. The results show that multiple micro-inclusions can serve as heating source which induce devastating damages under the action of a millisecond laser. The damage happens both from front and back surfaces. The front surface damage is caused by heat and stress while the back surface damage is dominant by stress. The damage morphologies indicated by numerical results meet well with the experimental morphologies observed. |
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| Keywords: | long pulse laser damage temperature field stress field multi-inclusion |
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