四倍频Nd∶YAG激光在高压氢气中的喇曼频移研究  

Study of Stokes generation in Nd∶YAG fourth harmonic(266nm) pumped H_2

作　　者：朱晓峥[1] 楼祺洪[1] 叶震寰[1] 董景星[1] 魏运荣[1] 

机构地区：[1]中国科学院上海光学精密机械研究所

出　　处：《激光技术》2004年第2期170-172,176,共4页Laser Technology

基　　金：国家自然科学基金资助项目 (19984 0 0 2 );国家高技术ICF资助项目 (2 0 0 2AA84 6 0 2 0 )

摘　　要：利用Nd∶YAG固体激光器四倍频输出 (2 6 6nm)在高压H2 中的受激喇曼散射获得多波长的激光输出。当泵浦能量一定时 ,通过改变H2 压力得到了最佳的能量输出 ,2 99nm波长的激光能量为 3mJ,341nm波长的激光能量输出为 6 .1mJ ,398nm波长的激光能量输出为 2 .8mJ ,2 39nm波长的激光能量输出为 0 .8mJ,同时在 4 77nm ,5 95nm ,2 18nm ,2 0The stimulated Raman scattering (SRS) in H 2 pumped by the fourth harmonic of Nd∶YAG laser (266nm) is investigated.The wavelength of the pump laser has been shifted into 200nm～595nm wavelength region.When the pump laser is operated at laser energy of 22mJ,five orders of Stokes and three orders of anti-Stokes have been observed.The corresponding output energy of the first order Stokes (299nm),the second order Stokes (341nm) and the first order anti-Stokes (239nm) was 3mJ,6.1mJ and 0.8mJ respectively.The relationships between the pressure of H 2 and energy of each Stokes were investigated.Moreover,the circle beam spots have been observed.

关 键 词：受激喇曼散射 四波混频 固体激光 喇曼频移 

分 类 号：TN248.1[电子电信—物理电子学] O437[机械工程—光学工程]