Ultra high power fiber laser employing homemade (1+1) side-pumped fiber and tandem-pumping technique

Fengyun Li; Cong Gao; Nian Liu; Jiangyun Dai; Changle Shen; Yi Chen; Fang Li; Chun Zhang; Yuwei Li; Yu Liu; Honghuan Lin; Jianjun Wang

doi:10.1117/12.2668902

21 March 2023 Ultra high power fiber laser employing homemade (1+1) side-pumped fiber and tandem-pumping technique

Fengyun Li, Cong Gao, Nian Liu, Jiangyun Dai, Changle Shen, Yi Chen, Fang Li, Chun Zhang, Yuwei Li, Yu Liu, Honghuan Lin, Jianjun Wang

Author Affiliations +

Proceedings Volume 12595, Advanced Fiber Laser Conference (AFL2022); 125951Z (2023) https://doi.org/10.1117/12.2668902
Event: Advanced Fiber Laser Conference (AFL2022), 2022, Changsha, China

Abstract

With a homemade (1+1) side-pumped fiber and 1018 nm tandem-pumping strategy, we report an experimental demonstration of 17.4 kW power output, which is apparently a remarkable achievement. The (1+1) side-pumped fiber consists of an active core, highly doped with Ytterbium up to 2000 ppm, and a pump core to transport intensive pumping power through a homemade 5×1 combiner. Stimulated Raman scattering suppression ratio at maximum power is improved to 37.8 dB due to an array of connected tilted fiber Bragg gratings performance. So, the experimental result clarifies the feasibility of combining side- and tandem- pumping in ultra high power scale of tens of kilowatts.

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Fengyun Li, Cong Gao, Nian Liu, Jiangyun Dai, Changle Shen, Yi Chen, Fang Li, Chun Zhang, Yuwei Li, Yu Liu, Honghuan Lin, and Jianjun Wang "Ultra high power fiber laser employing homemade (1+1) side-pumped fiber and tandem-pumping technique", Proc. SPIE 12595, Advanced Fiber Laser Conference (AFL2022), 125951Z (21 March 2023); https://doi.org/10.1117/12.2668902

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