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Chinese Journal of Lasers, Volume. 47, Issue 12, 1201004(2020)

Multichannel Single-Pulse Laser Energy Monitoring Methodology

Yan Wenbing1,2, Yang Yong1、*, Ji Kaijun1,2, Ye Hui1,2,3, Cheng Xuewu1, Yang Guotao4, Liu Zhongzheng1,2, Wang Jiqin1,2, Lin Xin1, Song Shalei1, Zheng Jinzhou1, Xiao Yiran1, Du Lifang4, and Li Faquan1
Author Affiliations
  • 1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Shanghai Institution of Satellite Engineering, Shanghai 201109, China
  • 4State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
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    AbstractGet PDF(in Chinese)
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    References (18)
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    Figures & Tables(8)
    Multichannel single-pulse laser energy change monitoring device

    Fig. 1. Multichannel single-pulse laser energy change monitoring device

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    Laser spot distribution on CMOS surface, in which the round spot is the image of fiber bundle. (a) Spot image of the PCS1-7; (b) spot image of the PCS1-50

    Fig. 2. Laser spot distribution on CMOS surface, in which the round spot is the image of fiber bundle. (a) Spot image of the PCS1-7; (b) spot image of the PCS1-50

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    Flow chart of data acquisition and processing program

    Fig. 3. Flow chart of data acquisition and processing program

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    Light layout for comparison of measurement results between multichannel single-pulse laser energy change monitoring device and power meter

    Fig. 4. Light layout for comparison of measurement results between multichannel single-pulse laser energy change monitoring device and power meter

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    Relationship between laser power and gray scale value

    Fig. 5. Relationship between laser power and gray scale value

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    Optical layout of the four channels single-pulse laser energy monitoring

    Fig. 6. Optical layout of the four channels single-pulse laser energy monitoring

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    Monitoring results. (a) Four channels laser energy versus time; (b) efficiency of the secondary harmonic generation, conversion efficiency of pulsed dye laser, and ASE ratio versus time

    Fig. 7. Monitoring results. (a) Four channels laser energy versus time; (b) efficiency of the secondary harmonic generation, conversion efficiency of pulsed dye laser, and ASE ratio versus time

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    • Table 1. Parameters of multichannel optical imaging unit

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      Table 1. Parameters of multichannel optical imaging unit

      Device componentParameter
      Fiber (PCS1-7)Transmission band: 400--1100nm
      Numerical aperture: 0.22
      Transmittance per meter: 0.9--0.99(400--1100nm)
      LensFocal length: 30.00 mm
      Diameter: 25.4 mm
      CMOSPixel size: 6μm×6μm
      Frame rate/resolution: 120frame/s @640pixel×480pixel
      Spectral responsivity: 390--1100nm
      Shutter type: Global exposure
      Exposure time: 15.667--912.634ms
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    Yan Wenbing, Yang Yong, Ji Kaijun, Ye Hui, Cheng Xuewu, Yang Guotao, Liu Zhongzheng, Wang Jiqin, Lin Xin, Song Shalei, Zheng Jinzhou, Xiao Yiran, Du Lifang, Li Faquan. Multichannel Single-Pulse Laser Energy Monitoring Methodology[J]. Chinese Journal of Lasers, 2020, 47(12): 1201004

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    Paper Information

    Category: laser devices and laser physics

    Received: Jun. 23, 2020

    Accepted: --

    Published Online: Dec. 3, 2020

    The Author Email: Yong Yang (yangyong@apm.ac.cn)

    DOI:10.3788/CJL202047.1201004

    Topics

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