(1+1)型长距离侧面泵浦光纤实现17.4 kW激光输出  

17.4 kW (1+1) long distance side-pumped laser fiber

作　　者：高聪[1] 刘念[1] 李峰云 刘玙 代江云 沈昌乐[1] 贺红磊 吕嘉坤 李芳[1] 张立华 李雨薇[1] 姜蕾[1] 郭超[1] 陶汝茂 柯伟伟[2] 张昊宇[1] 王建军[1] 林宏奂[1] 景峰[1] Gao Cong;Liu Nian;Li Fengyun;Liu Yu;Dai Jiangyun;Shen Changle;He Hongle;LüJiakun;Li Fang;Zhang Lihua;Li Yuwei;Jiang Lei;Guo Chao;Tao Rumao;Ke Weiwei;Zhang Haoyu;Wang Jianjun;Lin Honghuan;Jing Feng(Laser Fusion Research Center,CAEP,Mianyang 621900,China;Institute of Applied Physics and Computational Mathematics,Beijing 100094,China)

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [2]北京应用物理与计算数学研究所,北京100094

出　　处：《强激光与粒子束》2022年第5期92-94,共3页High Power Laser and Particle Beams

摘　　要：长距离侧面泵浦激光光纤在泵浦光注入、热管理、非线性抑制等方面具有天然优势,是实现高功率激光输出的有效途径。研制了(1+1)型长距离侧面泵浦激光光纤,采用1018 nm同带泵浦反向注入方式实现了17.4 kW激光输出,斜率效率为82.1%,3 dB线宽为1.3 nm,拉曼抑制比为37.8 dB。研究结果展示了长距离侧面泵浦光纤作为数十千瓦光纤激光放大器增益介质的巨大应用潜力。The long distance side-pumped laser fiber(LDSPF) is characterized by its ability for high power pump power coupling, heat management and nonlinear effect suppressing, which is quite potential for high power fiber laser application.A(1+1) LDSPF for tandem pumping was fabricated and tested. Pumped by 1018 nm fiber lasers,17.4 kW laser output at 1080 nm with a slope efficiency of 82.1% was achieved with this fiber amplifier with backward pumping technique. Linewidth at 3 dB of the laser is 1.3 nm and the ratio of signal light to SRS is around 37.8 dB at the maximum power. The results demonstrate great potential of LDSPF as power amplifier for tens of kilowatts fiber laser.

关 键 词：光纤激光器 光纤放大器 同带泵浦 侧面泵浦 激光光纤 

分 类 号：TN244[电子电信—物理电子学] O439[机械工程—光学工程]