High Power Laser and Particle Beams, Volume. 34, Issue 5, 051002(2022)
17.4 kW (1+1) long distance side-pumped laser fiber
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.
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Cong Gao, Nian Liu, Fengyun Li, Yu Liu, Jiangyun Dai, Changle Shen, Hongle He, Jiakun Lü, Fang Li, Lihua Zhang, Yuwei Li, Lei Jiang, Chao Guo, Rumao Tao, Weiwei Ke, Haoyu Zhang, Jianjun Wang, Honghuan Lin, Feng Jing. 17.4 kW (1+1) long distance side-pumped laser fiber[J]. High Power Laser and Particle Beams, 2022, 34(5): 051002
Category: High Power Laser Physics and Technology?Research Letter
Received: Mar. 14, 2022
Accepted: --
Published Online: Jun. 2, 2022
The Author Email: Wang Jianjun (wjjcaep@caep.cn), Lin Honghuan (happylin2003@yeah.net)