532nm Nd:YAG激光的高效多波长受激喇曼转化  

Efficient multi-wavelength Raman conversion of Nd:YAG laser at 532 nm

作　　者：花晓清[1] 冷静[1] 杨何平[1] 沙国河[1] 张存浩[1] 

机构地区：[1]中国科学院大连化学物理研究所分子反应动力学国家重点实验室,辽宁大连116023

出　　处：《强激光与粒子束》2005年第11期1621-1624,共4页High Power Laser and Particle Beams

基　　金：国家重点基金研究发展规划项目资助课题(G1999075303)

摘　　要：Nd:YAG二倍频激光(532 nm)泵浦H2中的受激喇曼散射产生多级斯托克斯。其中一级、二级和三级斯托克斯的最高量子转换效率分别可达66%,60%和19%。在0.44 MPa下,可同时获得1 579 nm(19%),954 nm(30%),683 nm(33%),532 nm(14%),436 nm(3.7%)和368 nm(1.4%)的多波长输出。H2压力对多级斯托克斯转换有显著影响:高气压有利于产生高效的一级斯托克斯,而低气压则适合于高级斯托克斯和反斯托克斯的产生。Multi-order Stokes is generated in H2 pumped by a pulsed Nd：YAG laser at 532 nm. Maximum energy conversion efficiencies as high as 66%, 60% and 19% are attained for the first,second and third Stokes respectively. Under 0.44 MPa H2, significant multi-wavelength outputs can be obtained simultaneously with quantum distribution of 19% at 1 579 nm, 30% at 954 nm, 33% at 683 nm, 14% at 532 nm, 3.7% at 436 nm, and 1.4% at 368 nm. High-pressure H2 is found to be the best for highly efficient first Stokes conversion, while low-pressure H2 is proved suitable for higher order Stokes and anti-Stokes generation.

关 键 词：ND:YAG激光 受激喇曼散射 四波混频 H2气 

分 类 号：O437.3[机械工程—光学工程]