| 多波长激光同时辐照下熔石英元件的损伤研究 |
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| 引用本文： | 邱荣,蒋勇,郭德成,史晋芳,李翠,叶成,周强,韩伟,黄进.多波长激光同时辐照下熔石英元件的损伤研究[J].强激光与粒子束,2020,32(1):011011-1-011011-5. |
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| 作者姓名： | 邱荣 蒋勇 郭德成 史晋芳 李翠 叶成 周强 韩伟 黄进 |
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| 作者单位： | 西南科技大学极端条件物质特性联合实验室,四川绵阳 621900;四川省军民融合研究院,四川绵阳 621900;西南科技大学极端条件物质特性联合实验室,四川绵阳 621900;西南科技大学制造过程测试技术教育部重点实验室,四川绵阳 621900;西南科技大学极端条件物质特性联合实验室,四川绵阳 621900;中国工程物理研究院激光聚变研究中心,四川绵阳 621900 |
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| 基金项目： | 国家自然科学基金委员会与中国工程物理研究院联合基金项目(U1530109);国家自然科学基金项目(11972313) |
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| 摘 要： | 对比研究了3ω单独辐照、3ω＋2ω和3ω＋1ω双波长同时辐照下熔石英元件的初始损伤和损伤增长规律，重点研究3ω能量密度在其阈值附近时，低能量密度的2ω和1ω对初始损伤和损伤增长的影响，分析了波长间的能量耦合效应。结果表明:双波长同时辐照下，当2ω和1ω能量密度远低于其自身阈值时，它们对初始损伤几率和损伤增长阈值的影响可以忽略，但也会参与初始损伤和损伤增长过程，会增加初始损伤程度和损伤增长系数。基于飞秒双脉冲成像的冲击波速度测量表明，3ω和1ω同时辐照下，波长间的能量耦合效应会促进激光能量向材料沉积的效率。
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| 关 键 词： | 激光诱导损伤 熔石英 多波长激光 初始损伤 损伤增长 |
| 收稿时间： | 2019-11-25 |
Laser-induced damage in fused silica under multi-wavelength simultaneous laser irradiation |
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| Qiu Rong,Jiang Yong,Guo Decheng,Shi Jinfang,Li Cui,Ye Cheng,Zhou Qiang,Han Wei,Huang Jin.Laser-induced damage in fused silica under multi-wavelength simultaneous laser irradiation[J].High Power Laser and Particle Beams,2020,32(1):011011-1-011011-5. |
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| Authors: | Qiu Rong Jiang Yong Guo Decheng Shi Jinfang Li Cui Ye Cheng Zhou Qiang Han Wei Huang Jin |
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| Affiliation: | 1.Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621900, China2.Sichuan Civil-military Integration Institute, Mianyang 621900, China3.Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China4.Research Center of Laser Fusion, CAEP, P. O. Box 919-988, Mianyang 621900, China |
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| Abstract: | The initial damage and damage growth of fused silica optical elements irradiated by 3ω alone,by two wavelengths(3ω+2ω and 3ω+1ω)at the same time were studied.When the energy density of 3ω is near its threshold,the influence of 2ω and 1ωof low energy density on the initial damage and damage growth is studied.The energy coupling mechanism between wavelengths is analyzed.The results show that:When the energy density of 2ω or 1ωis much lower than its threshold,irradiating at the same time,their effects on the initial damage probability and damage growth threshold can be ignored.But the initial damage degree and damage growth coefficient will increase.The measurement of shock wave velocity based on femtosecond dual pulse imaging shows that,when 3ωand 1ωirradiate at the same time,the energy coupling effect between wavelengths will promote the deposition efficiency of laser energy to materials. |
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| Keywords: | laser induced damage fused silica multiwavelength laser initial damage damage growth |
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