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Chinese Journal of Lasers, Volume. 52, Issue 10, 1015001(2025)

Very‐High‐Order Two‐Dimensional Hermite‒Gaussian Mode Laser Based on Off‐Axis Pumping and Astigmatic Cavity

Quan Sheng1,2、*, Dechen Zhan1,2, Jingni Geng1,2, Tianchang Liu1,2, Chunpeng Shi1,2,3, Shijie Fu1,2, Wei Shi1,2、**, and Jianquan Yao1,2
Author Affiliations
  • 1School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
  • 2Key Laboratory of Opto-Electronic Information Technology, Ministry of Education, Tianjin University, Tianjin 300072, China
  • 3Academy of Opto-Electronics, China Electronics Technology Group Corporation (AOE CETC), Tianjin 300308, China
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    Figures & Tables(3)
    Schematic showing the relationship between pump position and mode excitation. (a) Excitation of fundamental mode by pump beam coinciding with the cavity axis; (b) pump beam off-axis in x-direction excites HG10,0 mode; (c)(d) overlap between the 2D off-axis pump beam and tilted 1D HG19,0 mode or 2D HG10,10 mode

    Fig. 1. Schematic showing the relationship between pump position and mode excitation. (a) Excitation of fundamental mode by pump beam coinciding with the cavity axis; (b) pump beam off-axis in x-direction excites HG10,0 mode; (c)(d) overlap between the 2D off-axis pump beam and tilted 1D HG19,0 mode or 2D HG10,10 mode

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    Schematic showing the optical path of astigmatic folded cavity laser for high-order 2D HG mode output

    Fig. 2. Schematic showing the optical path of astigmatic folded cavity laser for high-order 2D HG mode output

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    Typical high-order 2D HG mode laser patterns recorded using CCD camera in the experiment

    Fig. 3. Typical high-order 2D HG mode laser patterns recorded using CCD camera in the experiment

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    Quan Sheng, Dechen Zhan, Jingni Geng, Tianchang Liu, Chunpeng Shi, Shijie Fu, Wei Shi, Jianquan Yao. Very‐High‐Order Two‐Dimensional Hermite‒Gaussian Mode Laser Based on Off‐Axis Pumping and Astigmatic Cavity[J]. Chinese Journal of Lasers, 2025, 52(10): 1015001

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    Paper Information

    Category: Letters

    Received: Dec. 27, 2024

    Accepted: Mar. 5, 2025

    Published Online: May. 14, 2025

    The Author Email: Quan Sheng (shengquan@tju.edu.cn), Wei Shi (shiwei@tju.edu.cn)

    DOI:10.3788/CJL241479

    CSTR:32183.14.CJL241479

    Topics

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