Output characteristics of 1 μm all-fiber MOPA structure laser

HOU Xinyi; WU Ling; LI Baoqun; LI Zixiong; DU Lei; WANG Tianshu

doi:10.5768/JAO202344.0408002

Journal of Applied Optics > 2023 > 44(4): 920-926. > DOI: 10.5768/JAO202344.0408002

HOU Xinyi, WU Ling, LI Baoqun, LI Zixiong, DU Lei, WANG Tianshu. Output characteristics of 1 μm all-fiber MOPA structure laser[J]. Journal of Applied Optics, 2023, 44(4): 920-926. DOI: 10.5768/JAO202344.0408002

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Output characteristics of 1 μm all-fiber MOPA structure laser

HOU Xinyi^{1, 2,},
WU Ling^{1, 2},
LI Baoqun^{1, 2},
LI Zixiong²,
DU Lei^{1, 2},
WANG Tianshu^{1, 2, ,}

1.
National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, China
2.
School of Opto-electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China

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Received Date: November 15, 2022
Revised Date: January 08, 2023
Available Online: June 09, 2023

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Abstract

Abstract

The main oscillation power amplification (MOPA) structure has become one of the mainstream designs of high-power fiber laser due to its good beam quality and adjustable parameters. In order to improve the output performance of high-power ytterbium-doped fiber laser (YDFL) and increase the optical-to-optical conversion efficiency of the system, a MOPA structure all-fiber high-power laser based on 915 nm pump laser and double clad ytterbium-doped fiber (YDF) was reported. The high-power fiber laser was composed of a seed laser pumped by an electrically modulated laser diode (LD) and a ytterbium-doped fiber amplifier (YDFA). In continuous wave (CW) mode, after the laser seed source passing through the YDFA, the laser output with the center wavelength of 1 069.96 nm was realized, and the maximum average output power was up to 945.9 W. The slope efficiency of the MOPA structure laser is as high as 74.12%, which has good robustness. The research scheme has reference significance for the development of high-power MOPA structure fiber laser.
- fiber laser,
- ytterbium-doped fiber,
- main oscillation power amplification,
- continuous wave

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References (18)

References

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Output characteristics of 1 μm all-fiber MOPA structure laser