Infrared and Laser Engineering, Volume. 52, Issue 1, 20220281(2023)

Detection method of sidelobe peaks parameter for far-field measurement based on the diffraction inversion of sidelobe beam

Zhengzhou Wang1, Yaxuan Duan1、*, Li Wang1, Gang Li1, and Jiafu Guo1,2
Author Affiliations
  • 1Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(14)
    Optical design for far field measurement of focus spot using schlieren method based on diffraction inversion of sidelobe beam
    Flow chart of data processing
    Image of sidelobe beam diffraction inversion
    [in Chinese]
    Angle transformation image
    Parameter detection of sidelobe peak of one-dimensional beam curve in any direction
    Maximum curve rings of each sidelobe peak
    Theoretical one-dimensional curve to detect the parameters of sidelobe peak (Y = 256)
    Detected peak and trough position of one-dimensional sidelobe noise curve (Y = 256)
    All maximum curve rings of each sidelobe peak
    Detected parameters of each sidelobe peak of sidelobe beam in any directions
    • Table 1. Detected parameters of sidelobe peak of theoretical one-dimensional curve (Y=256)

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      Table 1. Detected parameters of sidelobe peak of theoretical one-dimensional curve (Y=256)

      Side lobe No. Peak No. PosX/ pixel Peak value (gray) Rise/fall/ pixel Pulse width/ pixel Energy integral (gray) Peak No. PosX/ pixel Peak value (gray) Rise/fall/ pixel Fulse width/ pixel Energy integral (gray)
      LeftRight
      15160573.5915/8247209.56354573.598/15247209.5
      24133278.6115/13283666.97381278.6113/15283666.9
      33107156.6115/12272055.28407156.6112/15272055.2
      428196.3115/12271266.2943396.3112/15271266.2
      5154.63.5514/1327834.91046063.5513/1427834.9
    • Table 2. Detected parameters of each sidelobe peak of one-dimensional noise curve (Y=256)

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      Table 2. Detected parameters of each sidelobe peak of one-dimensional noise curve (Y=256)

      Sidelobe No. Peak No. PosX/ pixel Peak value (gray) Rise/fall/ pixel Fulse width/ pixel Gray integral (gray) Peak No. PosX/ pixel Peak value (gray) Rise/fall/ pixel Fulse width/ pixel Gray integral (gray)
      LeftRight
      16159556.5113/19327523.911354543.4214/17317515.5
      25132293.1714/15293768.912381290.4511/15263749.9
      34106168.1417/13302214.813407162.3112/16282002.7
      438491.0119/6251294.414431121.499/26351580.4
      525681.5920/10301092.71545982.873/2225697.2
    • Table 3. Statistics of distribution characteristics of 5 maximum curve rings

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      Table 3. Statistics of distribution characteristics of 5 maximum curve rings

      No.Radius/pixelPeaks (gray)Gray integral (gray)
      MinMaxMeanErrorMinMaxMeanTheoryErrorMinMaxMeanError
      19510297.47−0.53526.64600.39573.243573.590−0.350145731572615080661
      2121129124.81−0.19249.76318.95279.127278.6100.4306911.17883.27372.727.3
      31471571510.00136.08197.90156.506156.612−0.1023900.34735.04253.642
      4172201177.670.6781.65136.9696.44195.9630.4772665.53963.73173.5682.7
      5201224204.551.5551.56116.5363.58663.5540.0361288.32002.21641.7−86.1
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    Zhengzhou Wang, Yaxuan Duan, Li Wang, Gang Li, Jiafu Guo. Detection method of sidelobe peaks parameter for far-field measurement based on the diffraction inversion of sidelobe beam[J]. Infrared and Laser Engineering, 2023, 52(1): 20220281

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    Paper Information

    Category: Lasers & Laser optics

    Received: Apr. 21, 2022

    Accepted: --

    Published Online: Feb. 9, 2023

    The Author Email: Duan Yaxuan (6216366@163.com)

    DOI:10.3788/IRLA20220281

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