| 摘要 |
A holographic multiplex recording method is provided in which remaining dynamic range in each recording area is made more uniform upon holographic multiplex recording. In this holographic recording method, a first-stage recording spot row RX<SUB>1 </SUB>is formed by arranging recording spots RS in an X-axis direction without overlapping, and then a second-stage recording spot row RX<SUB>2 </SUB>formed of the recording spots RS without overlapping in the X-axis direction is recorded in a position for shift multiplex recording in a Y-axis direction. This is repeated to form a Y-axis direction first multiplex recording spot matrix TYX<SUB>1</SUB>. In this case, recording is performed to all recordable regions without shift multiplex recording in the X-axis direction. Subsequently, a Y-axis direction second multiplex recording spot matrix TYX<SUB>2 </SUB>is formed in a position shift-multiplexed in the X-axis direction with respect to the first-stage recording spot row RX<SUB>1 </SUB>initially recorded. The shift multiplex recording in the X-axis direction is performed in a similar manner up to a Y-axis direction last multiplex recording spot matrix TYX<SUB>n </SUB>to thereby complete the recording.
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