1μm全光纤MOPA结构激光器输出特性研究  

Output characteristics of 1μm all-fiber MOPA structure laser

作　　者：侯欣宜 吴玲 李保群 李子雄 杜垒 王天枢[1,2] HOU Xinyi;WU Ling;LI Baoqun;LI Zixiong;DU Lei;WANG Tianshu(National and Local Joint Engineering Research Center of Space Optoelectronics Technology,Changchun University of Science and Technology,Changchun 130022,China;School of Opto-electronic Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学空间光电技术国家与地方联合工程研究中心,吉林长春130022 [2]长春理工大学光电工程学院,吉林长春130022

出　　处：《应用光学》2023年第4期920-926,共7页Journal of Applied Optics

基　　金：吉林省自然科学基金(20200201263JC,YDZJ202101ZYTS139)。

摘　　要：主振荡功率放大(main oscillation power amplification,MOPA)结构由于其光束质量良好和参数可调的优点,已成为高功率光纤激光器的主流设计之一。为了改善高功率掺镱光纤激光器(ytterbium-doped fiber laser,YDFL)的输出性能,提高系统的光-光转换效率,文中报道了一台基于915 nm泵浦激光器和双包层掺镱光纤(ytterbium-doped fiber,YDF)的MOPA结构全光纤高功率激光器。该高功率光纤激光器由电调制激光二极管(laser diode,LD)泵浦的种子激光器和掺镱光纤放大器(ytterbium-doped fiber amplifier,YDFA)组成。连续光(continuous wave,CW)工作模式下,激光种子源经过YDFA后,实现了中心波长为1069.96 nm的激光输出,最大平均输出功率可达945.9 W,MOPA激光器整机的斜率效率高达74.12%,具有良好的稳健性。该研究方案对研制高功率MOPA光纤激光器具有参考意义。The main oscillation power amplification(MOPA)structure has become one of the mainstream designs of high-power fiber laser due to its good beam quality and adjustable parameters.In order to improve the output performance of high-power ytterbium-doped fiber laser(YDFL)and increase the optical-to-optical conversion efficiency of the system,a MOPA structure all-fiber high-power laser based on 915 nm pump laser and double clad ytterbium-doped fiber(YDF)was reported.The high-power fiber laser was composed of a seed laser pumped by an electrically modulated laser diode(LD)and a ytterbium-doped fiber amplifier(YDFA).In continuous wave(CW)mode,after the laser seed source passing through the YDFA,the laser output with the center wavelength of 1069.96 nm was realized,and the maximum average output power was up to 945.9 W.The slope efficiency of the MOPA structure laser is as high as 74.12%,which has good robustness.The research scheme has reference significance for the development of high-power MOPA structure fiber laser.

关 键 词：光纤激光器 掺镱光纤 主振荡功率放大 连续光 

分 类 号：TN248[电子电信—物理电子学]