Laser & Optoelectronics Progress, Volume. 62, Issue 15, 1514001(2025)

2 μm Ring Cavity Thulium-Doped Fiber Laser Directly Pumped by 793 nm Laser Diode with Wide Tunable Wavelength and Narrow Linewidth

Jianwei Wang1,2,3,4, Hui Shen2,3,4、*, Junjie Ren2,3,4, Zhenxing He2,3,4, Yunfeng Qi2,3,4、**, Bo Dai1, and Xisheng Ye1,2,3,4
Author Affiliations
  • 1School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • 2Wang Zhijiang Laser Innovation Center, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 3Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 4Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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    Figures & Tables(5)
    Experimental setup diagram of 2 μm narrow linewidth fiber laser with tunable wavelength
    Laser output power and slope efficiency. (a) Output power versus pump light power at different gain fiber lengths; (b) laser slope efficiency versus the length of gain fiber
    Spectral diagram of ring cavity laser and laser output power variation diagram. (a) Laser spectral diagram with or without saturable absorber and PC in ring cavity; (b) laser output power versus the length of saturable absorber; (c) spectral characteristics of output laser at 1950 nm wavelength
    Output laser wavelength tuning. (a) Output spectra and signal-to-noise ratio; (b) spectral characteristics of output laser at 2000 nm wavelength; (c) spectral characteristics of output laser at 2048 nm wavelength
    Laser output power at different wavelengths
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    Jianwei Wang, Hui Shen, Junjie Ren, Zhenxing He, Yunfeng Qi, Bo Dai, Xisheng Ye. 2 μm Ring Cavity Thulium-Doped Fiber Laser Directly Pumped by 793 nm Laser Diode with Wide Tunable Wavelength and Narrow Linewidth[J]. Laser & Optoelectronics Progress, 2025, 62(15): 1514001

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Nov. 7, 2024

    Accepted: Dec. 25, 2024

    Published Online: Jul. 8, 2025

    The Author Email: Hui Shen (huishen@siom.ac.cn), Yunfeng Qi (dreamer_7@siom.ac.cn)

    DOI:10.3788/LOP242230

    CSTR:32186.14.LOP242230

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