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15 October 2012 Collinear holographic data storage system in LiNbO3 crystal
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A transmission type of collinear holographic data storage system (CHDS) based on photorefractive LiNbO3 crystal is constructed. The polarization states of the coherent beams in the crystal are optimized for a larger dynamic range based on the coupled mode theory and the linearized band transport model of photorefractive effect. The optimization predicts that the photorefractive crystal will have a larger dynamic range by use of extraordinary light than using ordinary light for CHDS system when the grating wave vector is parallel to the c-axis of the crystal. It also predicts that the dynamic range for CHDS can be larger than that for traditional 90 degree holographic recording geometry. In the experimental results, data pages are recorded with the shifting multiplexing method in the LiNbO3 crystal by using the extraordinary light.
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Jianhua Li, Liangcai Cao, Qingsheng He, and Guofan Jin "Collinear holographic data storage system in LiNbO3 crystal", Proc. SPIE 8497, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VI, 849708 (15 October 2012);


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