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1064 nm激光和355 nm激光同时辐照DKDP晶体的耦合预处理效应

Coupling Conditioning Effect of DKDP Crystals Under Simultaneous Irradiation by 1064 nm laser and 355 nm Laser

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摘要

为了研究DKDP晶体在惯性约束核聚变(ICF)装置应用中的多波长激光诱导损伤特性,建立了1064 nm激光和355 nm激光同时辐照DKDP晶体的损伤测试装置,分析了不同激光能量密度组合下的损伤针点形貌、密度、尺寸和损伤概率。结果表明,当355 nm激光以R-on-1方式辐照样品,并加入不同能量密度的1064 nm激光时,随着1064 nm激光能量密度的升高,测试样品的抗激光损伤性能得到改善,损伤针点形貌逐渐与1064 nm激光单独作用时的损伤形貌类似,损伤针点密度减小,损伤针点尺寸增大,整体上表现出耦合预处理效应。

Abstract

To study the characteristics of multi-wavelength laser-induced damages in DKDP crystals used in the inertial confinement fusion (ICF) device, a damage test facility is established, in which the DKDP crystals are under the simultaneous irradiation of 1064 nm and 355 nm lasers. The damage pinpoint morphology, density, size, and damage probability under exposure by a combination of different laser fluences are compared and analyzed. When irradiating a sample with 355-nm laser pulses in R-on-1 tests, 1064-nm laser pulses with different fluences are added. The results show that as the 1064-nm laser fluence increases, the laser damage resistance of the sample increases, the damage pinpoint morphology tends to be similar with that when the sample is irradiated by the 1064 nm laser alone, the damage pinpoint density decreases, and the damage pinpoint size increases. As a whole, the coupling conditioning effect is clearly exhibited.

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中图分类号:O731

DOI:10.3788/cjl201946.0501003

所属栏目:激光器件与激光物理

基金项目:国家自然科学基金(11874369,U1831211)、中科院战略性先导科技专项(XDB1603)

收稿日期:2018-12-29

修改稿日期:2019-01-17

网络出版日期:2019-01-28

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吴金明:上海大学材料科学与工程学院, 上海 200444中国科学院上海光学精密机械研究所薄膜光学实验室, 上海 201800中国科学院强激光材料重点实验室, 上海 201800
赵元安:中国科学院上海光学精密机械研究所薄膜光学实验室, 上海 201800中国科学院强激光材料重点实验室, 上海 201800中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室, 吉林 长春 130033
汪琳:上海大学材料科学与工程学院, 上海 200444
彭小聪:中国科学院上海光学精密机械研究所薄膜光学实验室, 上海 201800中国科学院大学材料与光电研究中心, 北京 100049中国科学院强激光材料重点实验室, 上海 201800
杨留江:中国科学院上海光学精密机械研究所薄膜光学实验室, 上海 201800中国科学院强激光材料重点实验室, 上海 201800
单翀:中国工程物理研究院上海激光等离子体研究所, 上海 201800
邵建达:中国科学院上海光学精密机械研究所薄膜光学实验室, 上海 201800中国科学院强激光材料重点实验室, 上海 201800

联系人作者:赵元安(yazhao@siom.ac.cn); 汪琳(wanglinn@shu.edu.cn); 邵建达(jdshao@siom.ac.cn);

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引用该论文

Wu Jinming,Zhao Yuan′an,Wang Lin,Peng Xiaocong,Yang Liujiang,Shan Chong,Shao Jianda. Coupling Conditioning Effect of DKDP Crystals Under Simultaneous Irradiation by 1064 nm laser and 355 nm Laser[J]. Chinese Journal of Lasers, 2019, 46(5): 0501003

吴金明,赵元安,汪琳,彭小聪,杨留江,单翀,邵建达. 1064 nm激光和355 nm激光同时辐照DKDP晶体的耦合预处理效应[J]. 中国激光, 2019, 46(5): 0501003

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