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。
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.
作者
吴金明
赵元安
汪琳
彭小聪
杨留江
单翀
邵建达
Wu Jinming;Zhao Yuan’an;Wang Lin;Peng Xiaocong;Yang Liujiang;Shan Chong;Shao Jianda(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China;Laboratory of Thin Film Optics,Shanghai Institute of Optics and Fine Mechanics,Shanghai 201800,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory o f Materials for High Power Laser,Chinese Academy of Sciences,Shanghai 201800,China;State Key Laboratory o f Applied Optics,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun,Jilin 130033,China;Shanghai Institute of Laser Plasma,China Academy of Engineering Physics,Shanghai 201800,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2019年第5期312-317,共6页
Chinese Journal of Lasers
基金
国家自然科学基金(11874369,U1831211)
中科院战略性先导科技专项(XDB1603)
关键词
激光光学
晶体
预处理效应
多波长激光
损伤缺陷
laser optics
crystals
conditioning effect
multi-wavelength laser
damage defects
