A bidirectional output all-fiber laser oscillator with record output power of 8 kW

Liu Jiaqi; Zeng Lingfa; Shi Chen; Wu Hanshuo; Wang Peng; Xi Xiaoming; Zhang Hanwei; Wang Xiaolin; Xi Fengjie

doi:10.11884/HPLPB202335.230201

Volume 35 Issue 8

Jul. 2023

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Article Navigation > High Power Laser and Particle Beams > 2023 > 35(8): 081003

Liu Jiaqi, Zeng Lingfa, Shi Chen, et al. A bidirectional output all-fiber laser oscillator with record output power of 8 kW[J]. High Power Laser and Particle Beams, 2023, 35: 081003. doi: 10.11884/HPLPB202335.230201

Citation:

Liu Jiaqi, Zeng Lingfa, Shi Chen, et al. A bidirectional output all-fiber laser oscillator with record output power of 8 kW[J]. High Power Laser and Particle Beams, 2023, 35: 081003. doi: 10.11884/HPLPB202335.230201

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A bidirectional output all-fiber laser oscillator with record output power of 8 kW

doi: 10.11884/HPLPB202335.230201

Liu Jiaqi^1
,,
Zeng Lingfa¹,
Shi Chen^{1, 2, 3},
Wu Hanshuo^{1, 2, 3},
Wang Peng^{1, 2, 3},
Xi Xiaoming^{1, 2, 3},
Zhang Hanwei^{1, 2, 3},
Wang Xiaolin^{1, 2, 3
,
,},
Xi Fengjie^{1, 2, 3
,
,}

1.
College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
2.
Nan Hu Laser Laboratory, National University of Defense Technology, Changsha 410073, China
3.
Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha 410073, China

Received Date: 2023-06-29
Accepted Date: 2023-07-22
Rev Recd Date: 2023-07-22

Available Online: 2023-07-24

Publish Date: 2023-08-15

Abstract

Abstract

The bidirectional output fiber laser can achieve two laser outputs through a resonant cavity structure, which can reduce the volume and cost of high-power fiber laser systems and has good application prospects in the industrial field. Based on the oscillator with bidirectional pumping, employing the double cladding ytterbium-doped fiber (DCYDF) with a core/cladding diameter of 30/400 µm which was pumped by the wavelength-stabilized 981 nm laser diodes (LDs), a bidirectional output fiber laser oscillator with a total output power of greater than 8 kW was achieved experimentally for the first time. With the total bidirectional pump power of 10.951 kW, a total output power of 8169 W with 3769 W at end A and 4400 W at end B were achieved, with an O-O efficiency of 74.6%. No TMI or SRS were observed at both ends, and higher laser output power can be expected by further increasing the pumping power.
- fiber laser,
- bidirectional output fiber laser,
- stimulated Raman scattering,
- transverse mode instability,
- fiber coiling

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References(8)

References

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