High Power Laser and Particle Beams, Volume. 36, Issue 1, 011001(2024)
20 kW fiber laser with high beam quality enabled by tapered ytterbium-doped fiber
The tapered fiber with varied core diameter along the longitudinal direction has a unique advantage in balancing Stimulated Raman Scattering (SRS) suppression and beam quality, making it a promising approach for purchasing high power laser with high beam quality. Recently, a monolithic high power fiber laser counter pumped by 1018 nm fiber lasers has been experimentally established employing tapered ytterbium-doped fiber made in house. A maximum power of 20.2 kW is achieved with the beam quality factor β<2 and Raman-suppression ratio of 33 dB. The results have demonstrated the great potential of tapered fiber in power scaling to tens of kW fiber laser while achieving good beam quality.
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Hu Xiao, Zhiyong Pan, Zilun Chen, Pengfei Ma, Wei Liu, Huan Yang, Zhiping Yan, Meng Wang, Xiaoming Xi, Zhixian Li, Baolai Yang, Linyong Yang, Liangjin Huang, Zhihe Huang, Jianqiu Cao, Xiaolin Wang, Zefeng Wang, Jinbao Chen. 20 kW fiber laser with high beam quality enabled by tapered ytterbium-doped fiber[J]. High Power Laser and Particle Beams, 2024, 36(1): 011001
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Received: Nov. 27, 2023
Accepted: Jan. 10, 2024
Published Online: Mar. 21, 2024
The Author Email: Wang Zefeng (zefengwang_nudt@163.com), Chen Jinbao (kdchenjinbao@aliyun.com)