Optical restoration of photorefractive holograms

P. Yeh; C. Gu; C. J. Cheng; K. Y. Hsu

doi:10.1007/BF01081282

Optical restoration of photorefractive holograms

P. Yeh^*, C. Gu, C. J. Cheng, K. Y. Hsu

^*Corresponding author for this work

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

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 self-enhanced readout scheme. The results also provide an explanation for the formation of mutually pumped phase conjugation in terms of the amplification of an initial noise grating. The results are presented and discussed.

Original language	English
Pages (from-to)	511-514
Number of pages	4
Journal	Applied Physics B Lasers and Optics
Volume	61
Issue number	5
DOIs	https://doi.org/10.1007/BF01081282
Publication status	Published - 1995 Nov
Externally published	Yes

Keywords

42.30
42.40
42.65

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)
Physics and Astronomy(all)

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10.1007/BF01081282

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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 self-enhanced readout scheme. The results also provide an explanation for the formation of mutually pumped phase conjugation in terms of the amplification of an initial noise grating. The results are presented and discussed.",

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AU - Yeh, P.

AU - Gu, C.

AU - Cheng, C. J.

AU - Hsu, K. Y.

PY - 1995/11

Y1 - 1995/11

N2 - 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 self-enhanced readout scheme. The results also provide an explanation for the formation of mutually pumped phase conjugation in terms of the amplification of an initial noise grating. The results are presented and discussed.

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 self-enhanced readout scheme. The results also provide an explanation for the formation of mutually pumped phase conjugation in terms of the amplification of an initial noise grating. The results are presented and discussed.

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KW - 42.40

KW - 42.65

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JF - Applied Physics B: Lasers and Optics

SN - 0946-2171

IS - 5

ER -

Optical restoration of photorefractive holograms

Abstract

Keywords

ASJC Scopus subject areas

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