Chinese Journal of Lasers B, 1997, 6 (6): 550, 网络出版: 2006-10-31  

Cross-talk Noise Suppresion in Volume Holography with a Composite Reading Beam

Cross-talk Noise Suppresion in Volume Holography with a Composite Reading Beam
作者单位
Department of Precision Instruments, Tsinghua University, Beijing 100084
摘要
Abstract
A new method for reducing the crosstalk noise in an angularly multiplexed volume holographic memory is presented. In this approach, each hologram is recorded with a plane wave as usual. Instead of using a single planar reference beam for reading each stored hologram, a composite beam is used which consists of multiple plane waves. Theoretical investigation shows that the crosstalktosignal ratio obtained by the proposed method is approximately 35 dB lower than that of the conventional case with a single plannar reading beam. In addition, the suggested method does not cause diffraction efficiency reduction either.

LI Xiaochun, WU Minxian, HE Qingsheng, JIN Guofan. Cross-talk Noise Suppresion in Volume Holography with a Composite Reading Beam[J]. Chinese Journal of Lasers B, 1997, 6(6): 550. LI Xiaochun, WU Minxian, HE Qingsheng, JIN Guofan. Cross-talk Noise Suppresion in Volume Holography with a Composite Reading Beam[J]. 中国激光(英文版), 1997, 6(6): 550.

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