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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 7,
  • Issue 12,
  • pp. 1123-1125
  • (2009)

One-shot in-line digital holography based Hilbert phase-shifting

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Abstract

A novel one-shot in-line digital holography based on Hilbert phase-shifting is proposed. By weakening the ratio of object wave to reference wave and applying natural logarithmized operation on the in-line digital hologram, the real part of object wave can be well extracted. Then utilizing Hilbert transform to digitally realize π/2- phase shift, which would make it possible to reconstruct the object wavefront from a single-exposure in-line digital hologram. Preliminary experimental results are presented to confirm the proposed method. This technique can be used for real time imaging or monitoring moving objects.

© 2009 Chinese Optics Letters

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