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Speckle noise reduction in digital holography by use of multiple polarization holograms
Authors:Lu Rong Wen Xiao  Feng Pan  Shuo Liu  and Rui Li
Institution:[1]School of Instrumentation Science and Opto-Electronies Engineering, Beihang University, Beijing 100191, China [2]Department of Physics and Astronomy, University of California, Los Angeles, CA 90095-1547, USA
Abstract:A novel speckle reduction technique for digital holography is proposed.Multiple off-axis holograms are recorded using a circularly polarized illumination beam and a rotating linearly polarized reference beam.The speckle noise in the reconstructed images is suppressed by averaging these fields.We demonstrate the effectiveness of this technique experimentally and conduct additional statistical evaluation.
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