自聚焦透镜耦合Nd:YVO_4/LBO全固态绿光激光器  

High efficient all-solid-state Nd:YVO_4/LBO green laser with self-focus lens

作　　者：陈浩伟[1] 解慧明[2] 贾森[1] 李莉莎[3] 李隆[1] 赵云青[1] 白杨[1] 白晋涛[1] 

机构地区：[1]西北大学光子学与光子技术研究所陕西省光电子技术重点实验室,陕西西安710069 [2]陕西省西安中学,陕西西安710003 [3]西北大学物理学系,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2007年第4期534-538,共5页Journal of Northwest University（Natural Science Edition）

基　　金：国家火炬计划基金资助项目(2006GH041493)

摘　　要：目的为减小传统透镜耦合系统给泵浦光束带来的热畸变,提高耦合效率,较好地实现抽运光与振荡光之间的模式匹配。方法利用自聚焦透镜端面抽运Nd:YVO4/LBO系统,LBO晶体采用了I类非临界相位匹配方式,分析了激光晶体热透镜效应对三镜V型折叠腔稳定性的影响。结果通过对端面抽运Nd:YVO4晶体工作特点的分析,得出了端面抽运方形激光晶体内部温度场的分布规律和热透镜焦距的表达式。结论抽运光功率为28.4 W时,获得了9.9 W的连续绿光输出,其光-光转换效率达34.9%。Aim To decrease pump light thermal distortion brought forth by the conventional optical lens and improve transmission efficiency for better realiging tho model match between the diode laser＇s pump light and oscillatory laser.Methods Based on the resonant stability condition analysis of laser crystal＇s thermal focus lens effect to the three-mirror V-type fold cavity,in the self-focus lens coupled end-pumped Nd：YVO4/LBO continuous green laser experiments,with I-type noncritical phase matching LBO crystal being used by intracavity doubling frequency.Results Through end-pumped Nd：YVO4 crystal work characteristic analysis,the rectangular laser crystal internal temperature field distribution general expression was obtained.Conclusion The maximum of 9.9W CW TEM00 532 nm green laser was got while diode laser＇s pump power was 28.4W,the optical-optical conversion efficiency was 34.9 %.

关 键 词：Nd:YVO4/LBO激光器 温度场分布 热透镜效应 稳定性条件 

分 类 号：TN248.1[电子电信—物理电子学]