355 nm和1064 nm双波长预处理对DKDP晶体损伤性质的影响  

Effect of 355 nm and 1064 nm dual-wavelength conditioning on the bulk damage properties of DKDP crystal

作　　者：李云飞 史晋芳[1,2] 邱荣 余健[1,2] 郭德成[2] 周磊 Li Yunfei;Shi Jinfang;Qiu Rong;Yu Jian;Guo Decheng;Zhou Lei(School of Manufacturing Science and Engineering,Key Laboratory of Testing Technology for Manufacturing Process of Ministry of Education,Southwest University of Science and Technology,Mianyang 621010,China;Joint Laboratory for Extreme Conditions Matter Properties,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]西南科技大学制造科学与工程学院,制造过程测试技术教育部重点实验室,四川绵阳621010 [2]西南科技大学极端条件物质特性联合实验室,四川绵阳621010

出　　处：《强激光与粒子束》2022年第6期13-18,共6页High Power Laser and Particle Beams

基　　金：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)。

摘　　要：为了研究3ω预处理、3ω和1ω同时辐照预处理情况后DKDP晶体的3ω损伤特性,建立了双波长预处理和损伤测试实验系统,重点研究了双波长同时辐照预处理情况下1ω能量密度对预处理效果的影响,分析了双波长同时辐照预处理过程中的能量耦合机制。研究结果表明:双波长同时辐照预处理在提升DKDP晶体抗3ω激光损伤性能方面的效果明显好于单波长预处理;在双波长同时辐照预处理情况下,远低于自身预处理阈值的1ω参与了预处理作用过程;在相同3ω能量密度、能量阶梯的预处理策略下,1ω能量密度存在最佳值。To study the 3ωdamage characteristics of DKDP crystals after 3ωconditioning,3ωand 1ωconditioning at the same time,a dual-wavelength conditioning and damage test experimental system was established.The conditioning effects of 1ωenergy density under dual wavelength irradiation were studied emphatically.The energy coupling mechanism in the conditioning process of dual-wavelength irradiation was analyzed.Research results show that the effect of dual-wavelength conditioning is significantly better than that of single wavelength.In the case of dual-wavelength simultaneous irradiation conditioning,the 1ωwhich is far below the threshold value of its own conditioning participates in the conditioning.Under the same conditioning strategy of 3ωenergy density and energy gradient,there is an optimal value of 1ωenergy density.

关 键 词：激光诱导损伤 DKDP晶体 激光预处理 双波长激光 能量耦合效应 

分 类 号：O731[理学—晶体学]