Nd:YAG环形腔单频激光器  

Single-Frequency Nd:YAG Ring Laser

作　　者：赵伟芳[1,2] 侯玮[2] 李港[1] 林学春[2] 李晋闽[2] 

机构地区：[1]北京工业大学激光工程研究院,北京100124 [2]中国科学院半导体研究所全固态光源实验室,北京100083

出　　处：《中国激光》2010年第11期2810-2812,共3页Chinese Journal of Lasers

基　　金：国家863计划(2008AA030116);国家973计划(2010CB933800)资助课题

摘　　要：采用光纤耦合输出激光二极管单端端面抽运Nd∶YAG晶体,考虑到晶体的热透镜效应,优化设计了四镜折叠环形腔,使抽运光斑的大小和振荡光斑的大小符合模式匹配的要求;在腔内插入偏振片、法拉第旋光器和半波片从而实现激光的单向运转以抑制空间烧孔效应;同时利用偏振片补偿了一定的像散;并在腔内加入标准具,压缩单频激光的线宽,最终实现连续单频1064 nm激光输出。在7 W抽运功率时,输出了2 W的单频激光,斜率效率为37%,单频激光的线宽为50 MHz,M2因子约为1.2。A Nd∶YAG crystal was end-pumped by a fiber-coupled laser diode（FCLD）.The four-mirror bow-tie ring cavity with a Faraday rotator and a half wave plate was applied to eliminate the spatial hole-burning effect.A solid etalon was inserted into the cavity to obtain the narrow line width single frequency output.The maximum output was 2 W and the slope efficiency was 37% with 7 W of the incident power.The line width of the single frequency was 50 MHz,and the M2 factor was about 1.2.

关 键 词：激光器 全固态环形激光器 单频 Nd∶YAG晶体 

分 类 号：TN248.1[电子电信—物理电子学] TN242