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Chinese Journal of Lasers, Volume. 51, Issue 13, 1301001(2024)

Laser Performance of Single Tapered Ytterbium‑Doped Fiber in Nanosecond Pulsed Amplifier

Weizhi Liu1, Xiaoliang Wang1, Xianfeng Lin2, Zhilun Zhang1, Tao Luo1, Runheng Xiao1, Yingbin Xing1, Jinggang Peng1, Haiqing Li1, Nengli Dai1, and Jinyan Li1、*
Author Affiliations
  • 1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei , China
  • 2Wuhan Changjin Laser Technology Co., Ltd., Wuhan 430206, Hubei , China
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    Structural diagram of tapered fiber

    Fig. 1. Structural diagram of tapered fiber

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    Refractive index profile of preform rod

    Fig. 2. Refractive index profile of preform rod

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    All-fiber nanosecond pulsed MOPA system

    Fig. 3. All-fiber nanosecond pulsed MOPA system

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    Output characteristics of T-YDF. (a) Output power versus pump power; (b) backward powers under different output powers; (c) spectra under different output powers; (d) pulse shape and width

    Fig. 4. Output characteristics of T-YDF. (a) Output power versus pump power; (b) backward powers under different output powers; (c) spectra under different output powers; (d) pulse shape and width

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    Output characteristics of uniform fibers. (a) Output power versus pump power for 31 μm/250 μm YDF; (b) spectra of 31 μm/250 μm YDF under different output powers; (c) output power versus pump power for 50 μm/400 μm YDF; (d) spectra of 50 μm/400 μm YDF under different output powers

    Fig. 5. Output characteristics of uniform fibers. (a) Output power versus pump power for 31 μm/250 μm YDF; (b) spectra of 31 μm/250 μm YDF under different output powers; (c) output power versus pump power for 50 μm/400 μm YDF; (d) spectra of 50 μm/400 μm YDF under different output powers

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    Comparison of output characteristics between T-YDF and 50 μm/400 μm YDF. (a) Spectra under maximum output power; (b) beam quality factorsunder different output powers; (c) beam quality factorsof 50 μm/400 μm YDF under maximum output power; (d) beam quality factorsof T-YDF under maximum output power

    Fig. 6. Comparison of output characteristics between T-YDF and 50 μm/400 μm YDF. (a) Spectra under maximum output power; (b) beam quality factorsunder different output powers; (c) beam quality factorsof 50 μm/400 μm YDF under maximum output power; (d) beam quality factorsof T-YDF under maximum output power

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    Weizhi Liu, Xiaoliang Wang, Xianfeng Lin, Zhilun Zhang, Tao Luo, Runheng Xiao, Yingbin Xing, Jinggang Peng, Haiqing Li, Nengli Dai, Jinyan Li. Laser Performance of Single Tapered Ytterbium‑Doped Fiber in Nanosecond Pulsed Amplifier[J]. Chinese Journal of Lasers, 2024, 51(13): 1301001

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    Paper Information

    Category: laser devices and laser physics

    Received: Sep. 11, 2023

    Accepted: Oct. 26, 2023

    Published Online: Jun. 22, 2024

    The Author Email: Jinyan Li (ljy@hust.edu.cn)

    DOI:10.3788/CJL231188

    CSTR:32183.14.CJL231188

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology