Optimum conditions for high-fidelity holographic storage in photorefractive crystals

Shiuan Huei Lin; Pochi Yeh; Mei Li Hsieh; Ken Y. Hsu; Tai Chiung Hsieh

doi:10.1117/12.217002

Optimum conditions for high-fidelity holographic storage in photorefractive crystals

Shiuan Huei Lin, Pochi Yeh, Mei Li Hsieh, Ken Y. Hsu, Tai Chiung Hsieh

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

We present theoretical and experimental investigations on diffraction properties of transmission-type gratings in photorefractive crystals under the conditions of strong beam coupling effect between two writing beams. By using the coupled-recording-wave approach, the diffraction efficiency is derived as a function of intensity ratio of the two writing beams, the beam coupling constant, and the phase-shift between the interference fringes. Two configurations are discussed with π/2 and -π/2 phase shift between the interference fringes and the refractive index gratings. The theoretical results suggest that the case of π/2 phase shift has the optimum conditions for high-fidelity holographic storage of the gray-level images. On the other hand, the case of -π/2 phase shift is suitable for information processing in the Fourier plane. The experimental results are in agreement with the theoretical predictions.

Original language	English
Pages (from-to)	145-156
Number of pages	12
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	2529
DOIs	https://doi.org/10.1117/12.217002
State	Published - 18 Aug 1995
Event	Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications 1995 - San Diego, United States Duration: 9 Jul 1995 → 14 Jul 1995

Keywords

Beam coupling
Coupled-recording-wave approach
Fourier image processing
Gray-levels image storage
Photorefrctive holographic storage

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title = "Optimum conditions for high-fidelity holographic storage in photorefractive crystals",

abstract = "We present theoretical and experimental investigations on diffraction properties of transmission-type gratings in photorefractive crystals under the conditions of strong beam coupling effect between two writing beams. By using the coupled-recording-wave approach, the diffraction efficiency is derived as a function of intensity ratio of the two writing beams, the beam coupling constant, and the phase-shift between the interference fringes. Two configurations are discussed with π/2 and -π/2 phase shift between the interference fringes and the refractive index gratings. The theoretical results suggest that the case of π/2 phase shift has the optimum conditions for high-fidelity holographic storage of the gray-level images. On the other hand, the case of -π/2 phase shift is suitable for information processing in the Fourier plane. The experimental results are in agreement with the theoretical predictions.",

keywords = "Beam coupling, Coupled-recording-wave approach, Fourier image processing, Gray-levels image storage, Photorefrctive holographic storage",

author = "Lin, {Shiuan Huei} and Pochi Yeh and Hsieh, {Mei Li} and Hsu, {Ken Y.} and Hsieh, {Tai Chiung}",

year = "1995",

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journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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note = "Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications 1995 ; Conference date: 09-07-1995 Through 14-07-1995",

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TY - JOUR

T1 - Optimum conditions for high-fidelity holographic storage in photorefractive crystals

AU - Lin, Shiuan Huei

AU - Yeh, Pochi

AU - Hsieh, Mei Li

AU - Hsu, Ken Y.

AU - Hsieh, Tai Chiung

PY - 1995/8/18

Y1 - 1995/8/18

N2 - We present theoretical and experimental investigations on diffraction properties of transmission-type gratings in photorefractive crystals under the conditions of strong beam coupling effect between two writing beams. By using the coupled-recording-wave approach, the diffraction efficiency is derived as a function of intensity ratio of the two writing beams, the beam coupling constant, and the phase-shift between the interference fringes. Two configurations are discussed with π/2 and -π/2 phase shift between the interference fringes and the refractive index gratings. The theoretical results suggest that the case of π/2 phase shift has the optimum conditions for high-fidelity holographic storage of the gray-level images. On the other hand, the case of -π/2 phase shift is suitable for information processing in the Fourier plane. The experimental results are in agreement with the theoretical predictions.

AB - We present theoretical and experimental investigations on diffraction properties of transmission-type gratings in photorefractive crystals under the conditions of strong beam coupling effect between two writing beams. By using the coupled-recording-wave approach, the diffraction efficiency is derived as a function of intensity ratio of the two writing beams, the beam coupling constant, and the phase-shift between the interference fringes. Two configurations are discussed with π/2 and -π/2 phase shift between the interference fringes and the refractive index gratings. The theoretical results suggest that the case of π/2 phase shift has the optimum conditions for high-fidelity holographic storage of the gray-level images. On the other hand, the case of -π/2 phase shift is suitable for information processing in the Fourier plane. The experimental results are in agreement with the theoretical predictions.

KW - Beam coupling

KW - Coupled-recording-wave approach

KW - Fourier image processing

KW - Gray-levels image storage

KW - Photorefrctive holographic storage

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U2 - 10.1117/12.217002

DO - 10.1117/12.217002

M3 - Conference article

AN - SCOPUS:0010283743

SN - 0277-786X

VL - 2529

SP - 145

EP - 156

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications 1995

Y2 - 9 July 1995 through 14 July 1995

ER -

Optimum conditions for high-fidelity holographic storage in photorefractive crystals

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