Open AccessSpeckle elimination using shift-averaging in high-rate holographic projection
Author(s) -
Lior Golan,
Sharon Shoham
Publication year - 2009
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.001330
Subject(s) - speckle pattern , holography , optics , speckle noise , projection (relational algebra) , speckle imaging , electronic speckle pattern interferometry , frame rate , holographic display , computer science , wavefront , physics , algorithm
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.