大口径高通量三倍频研究  

The third harmonics generation with large aperture and high fluency

作　　者：季来林[1,2] 朱宝强 詹廷宇 戴亚平[2] 朱检[2] 马伟新[2] 林尊琪 

机构地区：[1]上海光学精密机械研究所,上海201800 [2]上海激光等离子体研究所,上海201800

出　　处：《物理学报》2011年第9期378-383,共6页Acta Physica Sinica

基　　金：国家科技重大专项(批准号:GFZX020510305.2);国家自然科学基金委员会-中国工程物理研究院联合基金(批准号:10676019/A06)资助的课题~~

摘　　要：为考核神光Ⅱ升级项目三倍频输出能力,以及研究高功率激光驱动器高通量三次谐波转换过程中相关技术问题,在神光Ⅱ第九路上开展了一轮‘Ⅰ+Ⅱ’三倍频实验,实验中三倍频最大输出达到2740J,最大输出能通量达到3.6J/cm2以上,最大转换效率为～63%;根据实验结果结合理论分析,初步研究了影响效率转换主要参量;在实验中观察到时间相位调制所引起的振幅调制,以及横向受激拉曼散射所引起的破坏.实验结果有效验证了神光Ⅱ升级的倍频器的相关设计程序和参数,以及神光Ⅱ升级项目的三倍频输出能力.To investigate the output of ultraviolet of ShenguangII upgrade project, and study the relevant problem in the harmonics generation in high power laser driver, an experiment with ‘Ⅰ＋Ⅱ＂ phase match is conducted in the Shenguang-Ⅱ NO.9 device.The maximal output energy of ultraviolet reaches 2740 J, the maximal fluency exceeds 3.6 J/cm2, and the maximal conversion efficiency is ~63%. The parameters that affect the conversion efficiency are preliminary discussed with experimenal results; the amplitude modulation caused by phase modulation and traverse stimulation Raman scattering is observed in experiment. The design program and parameters for Shenguang-Ⅱ upgrade device are testified by the experimental results.

关 键 词：非线性光学 三次谐波转换 高通量 时间相位调制 

分 类 号：O437[机械工程—光学工程]