ScholarLens Back to search
2002•Proceedings of 1994 Nonlinear Optics: Materials, Fundamentals and ApplicationsRequires access

Hologram restoration and enhancement in photorefractive media

Pochi Yeh, Changzhi Gu, Ching-I Cheng, Ken Yuh Hsu

Open publisher page 0 citations

Abstract

We have proposed and analyzed a new and simple optical method for the enhancement and restoration of decaying holograms in photorefractive media. 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 double-side alternating readout schedule in conjunction with a phase conjugator. The result also provides an explanation for the formation of mutually pumped phase conjugation in terms of the successive enhancement of an initial noise grating.>

About this research paper

What this paper is about

We have proposed and analyzed a new and simple optical method for the enhancement and restoration of decaying holograms in photorefractive media. 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 double-side alternating readout schedule in conjunction with a phase conjugator. The result also provides an explanation for the formation of mutually pumped phase conjugation in terms of the successive enhancement of an initial noise grating.>

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

We have proposed and analyzed a new and simple optical method for the enhancement and restoration of decaying holograms in photorefractive media. 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 double-side alternating readout schedule in conjunction with a phase conjugator. The result also provides an explanation for the formation of mutually pumped phase conjugation in terms of the successive enhancement of an initial noise grating.>

Key concepts: Photorefractive effect, Holography, Grating, Phase (matter), Optics, Phase conjugation, Coupling (piping), Noise (video)

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Hologram restoration and enhancement in photorefractive media — Research Paper | ScholarLens