Experimentation of 260 W wavelength stabilized fiber-coupled diode laser pumping model

Wu Hualing; Lei Jun; Guo Linhui; Wang Chengqian; Xie Pengfei; Liu Yuxuan; Zhang Yonggang; Cheng Xin’gang; Li Xiaoxiao; Lü Wenqiang; Wang Zhao; Gao Songxin

doi:10.11884/HPLPB202234.210558

Volume 34 Issue 6

Apr. 2022

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Article Navigation > High Power Laser and Particle Beams > 2022 > 34(6): 061002

Wu Hualing, Lei Jun, Guo Linhui, et al. Experimentation of 260 W wavelength stabilized fiber-coupled diode laser pumping model[J]. High Power Laser and Particle Beams, 2022, 34: 061002. doi: 10.11884/HPLPB202234.210558

Citation:

Wu Hualing, Lei Jun, Guo Linhui, et al. Experimentation of 260 W wavelength stabilized fiber-coupled diode laser pumping model[J]. High Power Laser and Particle Beams, 2022, 34: 061002. doi: 10.11884/HPLPB202234.210558

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Experimentation of 260 W wavelength stabilized fiber-coupled diode laser pumping model

doi: 10.11884/HPLPB202234.210558

Wu Hualing^{1, 2
,},
Lei Jun^{1, 2},
Guo Linhui^{1, 2},
Wang Chengqian^{1, 2},
Xie Pengfei^{1, 2},
Liu Yuxuan^{1, 2},
Zhang Yonggang^{1, 2},
Cheng Xin’gang^{1, 2},
Li Xiaoxiao^{1, 2},
Lü Wenqiang^{1, 2},
Wang Zhao^{1, 2},
Gao Songxin^{1, 2}

1.
Key Laboratory of Science and Technology on High Energy Laser, CAEP, Mianyang 621900, China
2.
Institute of Applied Electronics, CAEP, Mianyang 621900, China

Received Date: 2021-12-12
Rev Recd Date: 2022-05-05

Available Online: 2022-05-11

Publish Date: 2022-06-15

Abstract

Abstract

As pump station, fiber-coupled diode laser source is one of the key elements of fiber laser, its performance restricts the output level of the fiber laser directly. Aimed at a multi-mode fiber of 105 μm core diameter and 0.22 numerical aperture, a 260 W-level high-brightness fiber-coupled diode laser model based on single-emitter-COS (chip on submount) is developed. In the design, volume Bragg grating (VBG) is used to control the spectrum of the corresponding emitter at a narrow bandwidth (about 0.5 nm), and the beam shaping technologies, polarization multiplexing and aspherical lens are taken to couple the 18 LD beams into the multi-mode fiber. The experiment indicates that, the beam shaping system can couple the 18 LD beams into the fiber, and the output power can achieve 264 W, with the E-O efficiency of 52% at operation current 18 A. Simultaneously, the central wavelength of the model is locked at 975.92 nm with an FWHM of 0.51 nm. This design offers a feasible approach to the spectral-controlled fiber-coupled diode laser. The engineered fiber-coupled diode laser system can be widely used in fiber pumping and many other areas.
- diode laser,
- fiber coupling,
- wavelength-control,
- beam shaping

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References(8)

References

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