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Photorefractive fourier image amplification for low‐light‐level image detection
Author(s) -
Gilbreath G. C.,
Reintjes J. F.
Publication year - 1996
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19960620)12:3<119::aid-mop1>3.0.co;2-k
Subject(s) - photorefractive effect , optics , fourier transform , materials science , beam (structure) , noise (video) , image (mathematics) , optoelectronics , physics , computer science , computer vision , quantum mechanics
In this article we demonstrate viable photorefractive image amplification in BaTiO 3 at extremely low light levels. Uniform image amplification was observed over a range of intensity levels for different beam ratios. The technique is shown to be robust against beam fanning, the primary source of noise in multibeam photorefractive interactions in ferroelectric crystals. © 1996 John Wiley & Sons, Inc.