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Chinese Journal of Lasers, Volume. 49, Issue 24, 2408001(2022)

Diffraction Analysis of Femtosecond Laser Filaments

Hengyi Zheng1,2, Fukang Yin1,2, Tiejun Wang1,2、*, Yaoxiang Liu1, Yingxia Wei1, Bin Zhu3, Kainan Zhou3, and Yuxin Leng1,2
Author Affiliations
  • 1State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Laser Fusion Research Center and Science & Technology on Plasma Physics Laboratory, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China
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    Computational model diagram of probe beam diffracted by filament

    Fig. 1. Computational model diagram of probe beam diffracted by filament

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    Computation flow chart when probe beam propagates in plasma channel

    Fig. 2. Computation flow chart when probe beam propagates in plasma channel

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    Simulation results of intensity distribution of probe beam. Radial intensity distribution of probe beam at different numbers of segments: (a) at the exit of filament; (b) at CCD imaging end. Plane intensity distribution when the number of segments is 25: (c) at the exit of filament; (d) at CCD imaging end

    Fig. 3. Simulation results of intensity distribution of probe beam. Radial intensity distribution of probe beam at different numbers of segments: (a) at the exit of filament; (b) at CCD imaging end. Plane intensity distribution when the number of segments is 25: (c) at the exit of filament; (d) at CCD imaging end

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    Simulated and calculated results at different delays. (a1)－(a3) Diffraction patterns at different delays recorded by CCD；(b1)－(b3) distribution maps of calculated SSE values at different delays and segments; (e1)－(e3) fitting results

    Fig. 4. Simulated and calculated results at different delays. (a1)－(a3) Diffraction patterns at different delays recorded by CCD；(b1)－(b3) distribution maps of calculated SSE values at different delays and segments; (e1)－(e3) fitting results

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    Comparison of experimental measurement error and fitting error (delay time is 37.31 ps)

    Fig. 5. Comparison of experimental measurement error and fitting error (delay time is 37.31 ps)

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    Hengyi Zheng, Fukang Yin, Tiejun Wang, Yaoxiang Liu, Yingxia Wei, Bin Zhu, Kainan Zhou, Yuxin Leng. Diffraction Analysis of Femtosecond Laser Filaments[J]. Chinese Journal of Lasers, 2022, 49(24): 2408001

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    Paper Information

    Category: nonlinear optics

    Received: Apr. 10, 2022

    Accepted: Jun. 27, 2022

    Published Online: Nov. 15, 2022

    The Author Email: Wang Tiejun (tiejunwang@siom.ac.cn)

    DOI:10.3788/CJL202249.2408001

    Topics

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