Spectral domain characteristics of partially coherent illumination on grating imaging system

Xinyi Jing, Xiaoying Hu*, Liang Xu, Weiguo Liu, Steen G. Hanson, Mitsuo Takeda, Wei Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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The grating imaging system has the advantages of high resolution, high sensitivity and strong anti-interference ability, and has been widely used in machine vision, biomedicine and imaging spectroscopy and other fields. The coherence and polarization properties of the light field have different effects on the grating imaging system. This paper studies the polarization system of the grating illuminated by partially coherent light based on the unified theory of polarization and coherence. The experiment is carried out using a sinusoidal amplitude grating of 20 lines per mm. The experimental results show that when the coherence is fixed, as the normalized intrinsic frequency of the grating increases, the second harmonic disappears, leaving only the direct current (DC) component and the first harmonic component, which is consistent with the theoretical result.

Original languageEnglish
Title of host publicationSpeckle 2023
Subtitle of host publicationVIII International Conference on Speckle Metrology
EditorsWeiguo Liu, Wei Wang, Yechuan Zhu
ISBN (Electronic)9781510674592
ISBN (Print)9781510674585
Publication statusPublished - 4 Mar 2024
Event8th International Conference on Speckle Metrology 2023 - Xi'an, China
Duration: 18 Oct 202320 Oct 2023

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Conference8th International Conference on Speckle Metrology 2023
Abbreviated titleSpeckle 2023


  • coherence
  • polarization properties
  • spectral components

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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