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Chinese Journal of Lasers, Volume. 52, Issue 17, 1701005(2025)

Optimization Method of Thermal Recovery Period of High‑Power Laser Driver Based on Multi‑Slab Gas‑Cooled Configuration

Yenan Zhang1,2, Jiangfeng Wang1、*, Jiangtao Guo1, Xinghua Lu1, Wei Fan1, and Xuechun Li1、**
Author Affiliations
  • 1National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2University of Chinese Academy of Science, Beijing 100049,China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    Schematic of main amplifier

    Fig. 1. Schematic of main amplifier

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    Thermal effect model of main amplifier

    Fig. 2. Thermal effect model of main amplifier

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    Heat transfer coefficient distribution on surface of neodymium glass

    Fig. 3. Heat transfer coefficient distribution on surface of neodymium glass

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    Internal temperature difference versus time at different grid densities

    Fig. 4. Internal temperature difference versus time at different grid densities

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    Typical wavefront distribution of main amplifier

    Fig. 5. Typical wavefront distribution of main amplifier

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    Thermal recovery time of main amplifier. (a) Recovery time of internal temperature difference; (b) recovery time of wavefront

    Fig. 6. Thermal recovery time of main amplifier. (a) Recovery time of internal temperature difference; (b) recovery time of wavefront

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    Multi-slab structure. (a) Overall structure; (b) section view

    Fig. 7. Multi-slab structure. (a) Overall structure; (b) section view

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    Thermal recovery time of different multi-slab designs. (a) Recovery time of internal temperature difference; (b) recovery time of wavefront

    Fig. 8. Thermal recovery time of different multi-slab designs. (a) Recovery time of internal temperature difference; (b) recovery time of wavefront

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    Thermal recovery time under continuous blowing. (a) Recovery time of internal temperature difference; (b) recovery time of wavefront

    Fig. 9. Thermal recovery time under continuous blowing. (a) Recovery time of internal temperature difference; (b) recovery time of wavefront

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    Relationship between nitrogen flow rate and surface heat transfer coefficient

    Fig. 10. Relationship between nitrogen flow rate and surface heat transfer coefficient

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    Thermal recovery time under different flow rates. (a) Recovery time of internal temperature difference; (b) recovery time of wavefront

    Fig. 11. Thermal recovery time under different flow rates. (a) Recovery time of internal temperature difference; (b) recovery time of wavefront

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    Yenan Zhang, Jiangfeng Wang, Jiangtao Guo, Xinghua Lu, Wei Fan, Xuechun Li. Optimization Method of Thermal Recovery Period of High‑Power Laser Driver Based on Multi‑Slab Gas‑Cooled Configuration[J]. Chinese Journal of Lasers, 2025, 52(17): 1701005

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    Paper Information

    Category: laser devices and laser physics

    Received: Mar. 5, 2025

    Accepted: May. 6, 2025

    Published Online: Sep. 13, 2025

    The Author Email: Jiangfeng Wang (wajfeng@163.com), Xuechun Li (lixuechun@siom.ac.cn)

    DOI:10.3788/CJL250585

    CSTR:32183.14.CJL250585

    Topics

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