采用国产大模场面积双包层光纤的714W连续光纤激光器  

A Continuous-Wave 714 W Fiber Laser With China-Made Large-Mode-Area Double-Clad Fiber

作　　者：周军[1] 楼祺洪[1] 朱健强[1] 何兵[1] 董景星[1] 魏运荣[1] 张芳沛[1] 李进延[2] 李诗愈[2] 赵宏明[1] 王之江[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800 [2]烽火通信科技股份有限公司,武汉430079

出　　处：《光学学报》2006年第7期1119-1120,共2页Acta Optica Sinica

基　　金：中国科学院知识创新工程资助;上海市科委光科技专项(05DZ22001;046105020)资助课题

摘　　要：采用两个中心波长约976 nm准直输出的高功率半导体激光模块为抽运源,通过空间滤波和非球面透镜耦合技术,双端抽运长度为21 m的大模场面积国产掺镱双包层光纤,获得了714.5 W的高功率连续激光输出。采用反向抽运,当入纤抽运功率为760 W时,激光输出功率达到501 W;采用双端抽运,当入纤抽运功率为1137 W时,获得了714.5 W的高功率连续输出,光光转换效率为62.8%,斜率效率为67%。A continuous-wave （CW） fiber laser with 714 Watts output power has been obtained from 21 meters Chia-made Ytterbium-doped large-mode-area double-clad fiber. Two high-power collimated beam laser diodes （wavelenth 976 nm） with spatial filter and aspheric lens are used for pumping from the two ends of the fiber. A CW output power of 501 W is obtained under pump power of 760 W with backward pumping scheme. And the maximum output power of 714.5 W is realised under total pump power of 1137 W with double-sided end-pumping scheme, the opfical-to-optial efficiency and the slope efficiency whicd respect to the launched pump power are 62.8% and 67%, respectively.

关 键 词：激光器 光纤激光器 国产双包层光纤 双端抽运 

分 类 号：TN244[电子电信—物理电子学]