1064 nm激光泵浦D2产生1560 nm拉曼激光  

Conversion Efficiency of 1 560 nm Raman Laser in Deuterium Gas Pumped by 1 064 nm Pulsed Laser

作　　者：李仲慧 郑天成 蔡向龙 沈陈诚 刘栋[1] 郭敬为[1] LI Zhong-hui;ZHENG Tian-cheng;CAI Xiang-long;SHEN Chen-cheng;LIU Dong;GUO Jing-wei(Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China)

机构地区：[1]中国科学院大连化学物理研究所

出　　处：《现代应用物理》2019年第2期12-16,共5页Modern Applied Physics

基　　金：国家自然科学基金资助项目(11475177;61505210);中国科学院化学激光重点实验室开放课题(KLCL2018)

摘　　要：以波长为1064nm的线偏振脉冲激光为泵浦源,以高压氘气作为拉曼介质,实现了波长为1560nm的一阶拉曼S1、波长为2920nm的二阶拉曼S2和后向一阶拉曼BS1输出。采用透镜组双次聚焦的方法将S1的光子转化效率提高到61.5%,S1的最大单脉冲能量达到86.3mJ,脉宽不超过10ns。S2和BS1的最高光子转化效率分别超过12%和20%。此外,通过实验论证了压力对光子转化效率的影响,给出了进一步提高S1的光子转化效率的方法。In this paper, the first order Raman Stokes(S 1)with wavelength of 1 560 nm and the second order Raman Stokes (S 2) with wavelength of 2 920 nm and the backward first Stokes (BS 1) are generated by using a linear polarized pulsed laser with wavelength of 1 064 nm as pumped source and high pressure deuterium gas as Raman active medium. The maximum photon conversion efficiency of S 1 is 61.5%, the maximum single pulse output energy of S 1 is 86.3 mJ, and the pulse width of S 1 is not more than 10 ns. The highest photon conversion efficiencies of S 2 and BS 1 are more than 12% and 20%, respectively. The effect of pressure of deuterium on the conversion efficiency of S 1 is also verified experimentally, and the methods to further improve conversion efficiency of S 1 are also discussed.

关 键 词：受激拉曼散射 拉曼激光 转化效率 斯托克斯 压力 

分 类 号：TN248[电子电信—物理电子学]