| Insensitivity of Speckle Multiplexing to Multi—longitudinal Modes of Laser in Volume Holographic Storage |
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| 作者姓名： | 王津楠 何树荣 何庆声 黄东 金国藩 |
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| 作者单位： | DepartmentofPrecisionInstrument,Tsinghuauniversity,Beijing100084 |
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| 摘 要： | If a diode pumped solid state laser is used in a holographic storage system,its multi longitudinal modes may damage the angular selectivity of the hologram amd introduce more cross talk in the system.By theoretical analysis,we found that with adopting the speckle multiplexing scheme,holographic systems are no longer sensitive to the multi longitudinal modes of the laser source,and consequently the damage described above could be well suppressed.Moreover,the following high density storage experimental results also express strong advocacy of this conclusion.this result may greatly prompt the miniaturization of holographic stroage system.
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| 关 键 词： | 光全息存储 固体激光器 二极管泵浦 全息图 斑点多路技术 多纵向模式 |
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