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.
出处
《光学学报》
EI
CAS
CSCD
北大核心
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
关键词
激光器
光纤激光器
国产双包层光纤
双端抽运
laser
fiber laser
China-made fiber double-clad fiber
double-sided end-pumping scheme
