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Chinese Journal of Lasers, Volume. 50, Issue 22, 2201008(2023)

Acousto-Optic Q-Switched Radio Frequency Waveguide CO2 Laser with High Repetition Rate and Short Pulse Width

Mingjun Wu1,2, Rongqing Tan1,2、*, Hui Li1, Fangjin Ning1, Yijun Zheng1, Ziren Zhu1,2, and Jinzhou Bai1,2
Author Affiliations
  • 1The Laser Engineering & Technology Research Center, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
  • 2School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    References (23)
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    Figures & Tables(12)
    Calculation model of waveguide coupling

    Fig. 1. Calculation model of waveguide coupling

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    Coupling efficiency versus distance under different curvature radii

    Fig. 2. Coupling efficiency versus distance under different curvature radii

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    Coupling efficiency versus curvature radius at distance d=60 mm

    Fig. 3. Coupling efficiency versus curvature radius at distance d=60 mm

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    Experimental setup

    Fig. 4. Experimental setup

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    Peak power versus pressure under different repetition rates

    Fig. 5. Peak power versus pressure under different repetition rates

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    Pulse width versus pressure under different repetition rates

    Fig. 6. Pulse width versus pressure under different repetition rates

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    Output waveform when opening time of Q switch is 5 μs

    Fig. 7. Output waveform when opening time of Q switch is 5 μs

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    Tail length versus opening time under different repetition rates

    Fig. 8. Tail length versus opening time under different repetition rates

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    Waveforms under different repetition rates. (a) 1 kHz; (b) 20 kHz; (c) 50 kHz; (d) 100 kHz

    Fig. 9. Waveforms under different repetition rates. (a) 1 kHz; (b) 20 kHz; (c) 50 kHz; (d) 100 kHz

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    Pulse width versus repetition rate

    Fig. 10. Pulse width versus repetition rate

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    Average power and peak power versus repetition rate

    Fig. 11. Average power and peak power versus repetition rate

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    Measurement results of beam quality factors with distribution of beam intensity shown in inset

    Fig. 12. Measurement results of beam quality factors with distribution of beam intensity shown in inset

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    Mingjun Wu, Rongqing Tan, Hui Li, Fangjin Ning, Yijun Zheng, Ziren Zhu, Jinzhou Bai. Acousto-Optic Q-Switched Radio Frequency Waveguide CO2 Laser with High Repetition Rate and Short Pulse Width[J]. Chinese Journal of Lasers, 2023, 50(22): 2201008

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    Paper Information

    Category: laser devices and laser physics

    Received: Feb. 14, 2023

    Accepted: Apr. 5, 2023

    Published Online: Nov. 7, 2023

    The Author Email: Tan Rongqing (rongqingtan@163.com)

    DOI:10.3788/CJL230526

    Topics

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