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Frontiers of Optoelectronics, Volume. 17, Issue 2, 12200(2024)

Coherent beam combining of two all-PM thulium-doped fiber chirped pulse amplifiers

Bo Ren1, Hongxiang Chang1, Can Li1、*, Tao Wang1, Kaikai Jin1, Jiayi Zhang1, Kun Guo1, Rongtao Su1,2,3, Jinyong Leng1,2,3, and Pu Zhou1
Author Affiliations
  • 1College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
  • 2Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China
  • 3Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology,Changsha 410073, China
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    In this paper, we report a coherent beam combining (CBC) system that involves two thulium-doped all-polarization maintaining(PM) fiber chirped pulse amplifiers. Through phase-locking the two channels via a fiber stretcher by using the stochastic parallel gradient descent (SPGD) algorithm, a maximum average power of 265 W is obtained, with a CBC efficiency of 81% and a residual phase error of λ/1

    Keywords
    Chirped pulse amplifierCoherent beam combiningHigh-average powerThulium-doped fiber laser
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    Bo Ren, Hongxiang Chang, Can Li, Tao Wang, Kaikai Jin, Jiayi Zhang, Kun Guo, Rongtao Su, Jinyong Leng, Pu Zhou. Coherent beam combining of two all-PM thulium-doped fiber chirped pulse amplifiers[J]. Frontiers of Optoelectronics, 2024, 17(2): 12200

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    Paper Information

    Category: RESEARCH ARTICLE

    Received: Feb. 20, 2024

    Accepted: Apr. 29, 2024

    Published Online: Aug. 21, 2024

    The Author Email: Can Li (lc0616@163.com)

    DOI:10.1007/s12200-024-00117-3

    Topics

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