Hologram enhancement in photorefractive media

Pochi Yeh; Claire Gu; Chau Jern Cheng; Ken Y. Hsu

doi:10.1117/12.209465

Hologram enhancement in photorefractive media

Pochi Yeh^*, Claire Gu, Chau Jern Cheng, Ken Y. Hsu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

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.

Original language	English
Pages (from-to)	2204-2212
Number of pages	9
Journal	Optical Engineering
Volume	34
Issue number	8
DOIs	https://doi.org/10.1117/12.209465
Publication status	Published - 1995
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Engineering

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10.1117/12.209465

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AU - Yeh, Pochi

AU - Gu, Claire

AU - Cheng, Chau Jern

AU - Hsu, Ken Y.

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AB - 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.

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Hologram enhancement in photorefractive media

Abstract

ASJC Scopus subject areas

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