光学学报, 2006, 26 (7): 1119, 网络出版: 2006-08-28
采用国产大模场面积双包层光纤的714 W连续光纤激光器 
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A Continuous-Wave 714 W Fiber Laser With China-Made Large-Mode-Area Double-Clad Fiber
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
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%。
Abstract
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 optical-to-optial efficiency and the slope efficiency whicd respect to the launched pump power are 62.8% and 67%, respectively.
周军, 楼祺洪, 朱健强, 何兵, 董景星, 魏运荣, 张芳沛, 李进延, 李诗愈, 赵宏明, 王之江. 采用国产大模场面积双包层光纤的714 W连续光纤激光器[J]. 光学学报, 2006, 26(7): 1119. 周军, 楼祺洪, 朱健强, 何兵, 董景星, 魏运荣, 张芳沛, 李进延, 李诗愈, 赵宏明, 王之江. A Continuous-Wave 714 W Fiber Laser With China-Made Large-Mode-Area Double-Clad Fiber[J]. Acta Optica Sinica, 2006, 26(7): 1119.
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