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Optical Engineering

Hologram enhancement in photorefractive media
Author(s): Pochi Yeh; Claire Gu; Chau-Jern Cheng; Ken Yuh Hsu
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Paper Abstract

We consider the possibility of restoration and/or enhancement of decaying holograms in photorefractive media by using a simple optical readout in conjunction with a phase conjugator. The results indicate that extremely weak holograms can be enhanced provided that the two-beam coupling is sufficiently strong. Steady-state photorefractive holograms can be maintained continuously without decay by using a properly designed readout scheme. The result also provides an explanation for the formation of mutually pumped phase conjugation in terms of the amplification of initial noise gratings.

Paper Details

Date Published: 1 August 1995
PDF: 9 pages
Opt. Eng. 34(8) doi: 10.1117/12.209465
Published in: Optical Engineering Volume 34, Issue 8
Show Author Affiliations
Pochi Yeh, Univ. of California/Santa Barbara (United States)
Claire Gu, The Pennsylvania State Univ. (United States)
Chau-Jern Cheng, National Chiao Tung Univ. (Taiwan)
Ken Yuh Hsu, National Chiao Tung Univ. (Taiwan)

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