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Proceedings Paper

Optimum conditions for high-fidelity holographic storage in photorefractive crystals
Author(s): Shiuan-Huei Lin; Pochi Yeh; Mei-Li Hsieh; Ken Yuh Hsu; Tai Chiung Hsieh
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Paper 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 (pi) /2 and -(pi) /2 phase shift between the interference fringes and the refractive index gratings. The theoretical results suggest that the case of (pi) /2 phase shift has the optimum conditions for high-fidelity holographic storage of the gray-level images. On the other hand, the case of -(pi) /2 phase shift is suitable for information processing in the Fourier plane. The experimental results are in agreement with the theoretical predictions.

Paper Details

Date Published: 18 August 1995
PDF: 12 pages
Proc. SPIE 2529, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications, (18 August 1995); doi: 10.1117/12.217002
Show Author Affiliations
Shiuan-Huei Lin, Univ. of California/Santa Barbara (Taiwan)
Pochi Yeh, Univ. of California/Santa Barbara (Taiwan)
Mei-Li Hsieh, National Chiao Tung Univ. (Taiwan)
Ken Yuh Hsu, National Chiao Tung Univ. (Taiwan)
Tai Chiung Hsieh, National Chiao Tung Univ. (Taiwan)


Published in SPIE Proceedings Vol. 2529:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications
Francis T. S. Yu, Editor(s)

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