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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 12,
  • Issue 2,
  • pp. 020901-
  • (2014)

Phase retrieval from double axially displaced holograms for dual-wavelength in-line holography

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Abstract

A phase retrieval method for dual-wavelength in-line digital holography is presented with double axially displaced holograms. A synthetic wavelength is used during iterative propagations to retrieve wrap-free phase distributions with a much extended measurement range. The simulation and experimental results demonstrate a better elimination of the twin image, a faster rate of convergence of the iterative routine and less number of wavelengths are compared with previously reported multiple-wavelength in-line holography.

© 2014 Chinese Optics Letters

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