LiIO_3晶体的受激拉曼散射  

Stimulated Raman scattering of LiIO_3 crystal

作　　者：胡大伟[1,2] 王正平[1] 夏海瑞[3] 张怀金[1] 程秀凤[1] 于浩海[1] 许心光[1] 王继扬[1] 邵宗书[1] 许东[1] 

机构地区：[1]山东大学晶体材料国家重点实验室,济南250100 [2]山东大学国防科学技术研究院,济南250100 [3]山东大学物理学院,济南250100

出　　处：《强激光与粒子束》2008年第11期1883-1886,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(60508010;50590401);山东省泰山学者计划资助课题

摘　　要：采用腔外单次通过方式,测量了LiIO3晶体在532 nm皮秒脉冲下的受激拉曼散射。实验中观察到3级斯托克斯线(556.07,582.30,611.76 nm)和1级反斯托克斯线(509.57 nm),由此可计算出其频率间隔为820 cm-1。测量了LiIO3晶体各级拉曼散射谱线的阈值和增益系数,受激拉曼散射的整体转换效率达到56%。基于LiIO3晶体实现了皮秒外腔式拉曼激光器的运转,双波长输出总转换效率为27%,最大输出能量1.4 mJ。By the ultra-cavity single-pass configuration, stimulated Raman scattering（SRS） of LiIO3 crystal was realized. When the pump source was a 532 nm picosecond laser, three Stokes lines （556.07, 582.30, 611.76 nm） and one anti-Stokes line （509.57 nm） were observed, and the frequency shifting was calculated to be 820 cm 1. The SRS thresholds and Raman gain coefficients for different scattering lines were measured, and the total conversion efficiency reached 56%. Picosecond, external resonator Raman laser was realized based on LiIO3 crystal, the total conversion efficiency for dual-wavelength output was 27%, and the largest output energy was 1.4 mJ.

关 键 词：受激拉曼散射 泵浦阈值 增益系数 转换效率 LiIO3晶体 

分 类 号：O437.3[机械工程—光学工程]