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Acta Optica Sinica, Volume. 43, Issue 17, 1714001(2023)

All-Fiber Laser Amplifier of 3.5 kW and 1050 nm with Near-Single-Mode

Xiangming Meng1, Baolai Yang1,2,3、*, Xiaoming Xi1,2,3, Peng Wang1,2,3, Chen Shi1,2,3, Hanwei Zhang1,2,3, and Xiaolin Wang1,2,3、**
Author Affiliations
  • 1College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, Hunan, China
  • 2Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, Hunan, China
  • 3Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha 410073, Hunan, China
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    Experimental setup of 1050 nm fiber amplifier

    Fig. 1. Experimental setup of 1050 nm fiber amplifier

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    Output performances of fiber with different lengths. (a) Output power curves of 9 m YDF and 4.8 m YDF; (b) output spectra of 9 m YDF and 4.8 m YDF

    Fig. 2. Output performances of fiber with different lengths. (a) Output power curves of 9 m YDF and 4.8 m YDF; (b) output spectra of 9 m YDF and 4.8 m YDF

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    Comparison of output characteristics of different seed power. (a) Spectra at 2 kW level; (b) spectra at 3 kW level; (c) optical-to-optical conversion efficiency; (d) variation curve of seed power and FWHM with pump current

    Fig. 3. Comparison of output characteristics of different seed power. (a) Spectra at 2 kW level; (b) spectra at 3 kW level; (c) optical-to-optical conversion efficiency; (d) variation curve of seed power and FWHM with pump current

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    Output characteristics of fiber amplifier. (a) Curves of output power and corresponding optical-to-optical conversion efficiency; (b) output spectra at 3.52 kW; (c) STD of normalized PD-signal at different output powers; (d) beam quality and profile at 3.52 kW

    Fig. 4. Output characteristics of fiber amplifier. (a) Curves of output power and corresponding optical-to-optical conversion efficiency; (b) output spectra at 3.52 kW; (c) STD of normalized PD-signal at different output powers; (d) beam quality and profile at 3.52 kW

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    Xiangming Meng, Baolai Yang, Xiaoming Xi, Peng Wang, Chen Shi, Hanwei Zhang, Xiaolin Wang. All-Fiber Laser Amplifier of 3.5 kW and 1050 nm with Near-Single-Mode[J]. Acta Optica Sinica, 2023, 43(17): 1714001

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Feb. 15, 2023

    Accepted: Apr. 3, 2023

    Published Online: Sep. 14, 2023

    The Author Email: Yang Baolai (yangbaolai1989@163.com), Wang Xiaolin (chinawxllin@163.com)

    DOI:10.3788/AOS230555

    Topics

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