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The autocorrelation function of polychromatic laser speckle patterns near the image plane

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Abstract

The autocorrelation function of polychromatic speckle patterns produced near the image plane of a double diffraction imaging system is experimentally studied. The condition under which the polychromatic speckle field obeys Gaussian statistics is further investigated as a function of the numberN of scattering cells, using the average contrast of the speckle intensity fluctuations. The profile of the autocorrelation function is next investigated as a function ofN and the defocused distance from the image plane. It is found that the average contrast and autocorrelation function of the polychromatic speckle intensity fluctuations converge less rapidly with an increase inN than those of the monochromatic ones.

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References

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Author notes

  1. K. Nakagawa

    Present address: Department of Applied Material Science, Muroran Institute of Technology, Muroran, 050, Hokkaido, Japan

Authors and Affiliations

  1. Research Institute of Applied Electricity, Hokkaido University, Sapporo, 060, Hokkaido, Japan

    N. Nagamatsu, K. Nakagawa & T. Asakura

  2. Central Research Laboratory, Tateishi Electric Company, Nagaokakyoshi, 617, Kyoto, Japan

    K. Morishita

Authors
  1. N. Nagamatsu
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  2. K. Nakagawa
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  3. T. Asakura
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  4. K. Morishita
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Additional information

This work was done while Mr Morishita was at the Research Institute of Applied Electricity, Hokkaido University.

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Nagamatsu, N., Nakagawa, K., Asakura, T. et al. The autocorrelation function of polychromatic laser speckle patterns near the image plane. Opt Quant Electron 15, 507–512 (1983). https://doi.org/10.1007/BF00620019

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  • DOI: https://doi.org/10.1007/BF00620019

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