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| Cross-talk Noise Suppresion in Volume Holography with a Composite Reading Beam | |
| 引用本文： | LI Xiaochun WU Minxian HE Qingsheng JIN Guofan(Department of Precision Instruments,Tsinghua University,Beijing 100084,China). Cross-talk Noise Suppresion in Volume Holography with a Composite Reading Beam[J]. Chinese Journal of Lasers, 1997, 6(6): 550-555 |
| 作者姓名： | LI Xiaochun WU Minxian HE Qingsheng JIN Guofan(Department of Precision Instruments Tsinghua University Beijing 100084 China) |
| 作者单位： | Department of Precision Instruments，Tsinghua University，Beijing 100084，China |
| 基金项目： | Supported by the National Natural Science Foundation of China through Contract 69673033 and by the Defence Research Foundation of China through contract 96J20. 10.1.JW0118 |
| 摘 要： | ＣｒｏｓｔａｌｋＮｏｉｓｅＳｕｐｐｒｅｓｉｏｎｉｎＶｏｌｕｍｅＨｏｌｏｇｒａｐｈｙｗｉｔｈａＣｏｍｐｏｓｉｔｅＲｅａｄｉｎｇＢｅａｍＬＩＸｉａｏｃｈｕｎＷＵＭｉｎｘｉａｎＨＥＱｉｎｇｓｈｅｎｇＪＩＮＧｕｏｆａｎ（ＤｅｐａｒｔｍｅｎｔｏｆＰｒｅｃｉ... |
| 关 键 词： | volume holography crosstalk noise suppression |
| 收稿时间： | 1997-04-17 |
Cross-talk Noise Suppresion in Volume Holography with a Composite Reading Beam |
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| 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. |
| Keywords: | volume holography cross-talk noise suppression |
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