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Opt Express. 2009 Feb 2;17(3):1330-9.

Speckle elimination using shift-averaging in high-rate holographic projection.

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  • 1Faculty of Biomedical Engineering, The Technion-IIT, Haifa, Israel.

Abstract

Speckle is a major source of noise in holographic projection. Time averaging of multiple holograms may be used to reduce speckle contrast, but multiple holograms must be calculated per each frame, costing in computational power. We show that a single hologram may be used to generate a fully speckle-free reconstruction, by cyclic shifting and time averaging. We demonstrate the concept experimentally, and discuss its application for high-rate holographic projection systems.

PMID:
19188961
[PubMed]
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