Chinese Optics Letters, Volume. 15, Issue 11, 111201(2017)

Encoding method of CGH for highly accurate optical measurement based on non-maxima suppression

Xisheng Xiao1,2,3, Qinghua Yu1,2、*, Zhentao Zhu1,2,3, Kai Hu1,2, and Guilin Chen1,2
Author Affiliations
  • 1Shanghai Institute of Technical Physics of the Chinese Academy of Sciences, Shanghai 200083, China
  • 2Key Laboratory of Infrared System Detection and Imaging technology, Chinese Academy of Sciences, Shanghai 200083, China
  • 3University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(13)
    CGH-encoding process. (a) Generating binary fringes using phase contour interferograms. (b) Encoding the fringes into polygons.
    Deviations introduced by encoding.
    Digitalization and non-maxima suppression processes.
    Deviation induced by digitalizing the curve.
    Deviation induced by non-maxima suppression.
    Result of non-maxima suppression.
    Statistics of the suppression errors.
    Used self-aligned CGH to verify the encoding accuracy.
    Layout of the CGH.
    Substrate error.
    Testing the reflecting wave-front generated by the CGH.
    Experimental result.
    • Table 1. Error Estimation

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      Table 1. Error Estimation

      CGH ErrorsWave-front Phase Error/λ
      Substrate error0.024
      Pattern distortion error0.03
      Encoding error<0.02
      Whole path RSS error<0.041
      Single path RSS error<0.0205
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    Xisheng Xiao, Qinghua Yu, Zhentao Zhu, Kai Hu, Guilin Chen. Encoding method of CGH for highly accurate optical measurement based on non-maxima suppression[J]. Chinese Optics Letters, 2017, 15(11): 111201

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    Paper Information

    Category: Instrumentation, measurement, and metrology

    Received: Jun. 20, 2017

    Accepted: Aug. 11, 2017

    Published Online: Jul. 19, 2018

    The Author Email: Qinghua Yu (yuqinghua2000@126.com)

    DOI:10.3788/COL201715.111201

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