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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 10,
  • Issue 6,
  • pp. 060902-
  • (2012)

Twin image elimination from two in-line holograms via phase retrieval

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Abstract

The reconstruction quality of in-line holography suffers from the superposition of twin images that have different foci but identical information content. We propose a phase retrieval method using two axially displaced holograms and a finite transmission constraint to eliminate the conjugate image. The simulation and experimental results demonstrate a better elimination effect and a faster rate of convergence compared with those of previously reported methods. Two holograms can be recorded simultaneously using two cameras, thus this technique can be used in real-time imaging.

© 2012 Chinese Optics Letters

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