Optimum conditions for high-fidelity holographic storage in photorefractive crystals

Shiuan-Huei Lin; Pochi Yeh; Mei-Li Hsieh; Ken Yuh Hsu; Tai Chiung Hsieh

doi:10.1117/12.217002

18 August 1995 Optimum conditions for high-fidelity holographic storage in photorefractive crystals

Shiuan-Huei Lin, Pochi Yeh, Mei-Li Hsieh, Ken Yuh Hsu, Tai Chiung Hsieh

Proceedings Volume 2529, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications; (1995) https://doi.org/10.1117/12.217002
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

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.

Citation Download Citation

Shiuan-Huei Lin, Pochi Yeh, Mei-Li Hsieh, Ken Yuh Hsu, and Tai Chiung Hsieh "Optimum conditions for high-fidelity holographic storage in photorefractive crystals", Proc. SPIE 2529, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications, (18 August 1995); https://doi.org/10.1117/12.217002

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