| 摘要 |
A holographic recording device for multiple recording a plurality of interference fringes of a reference light and intensity-modulated signal lights in a same area or in areas slightly shifted each other of a holographic recording medium is disclosed which includes: phase modulation means for modulating phase of the signal light before or after the intensity modulation; and control means for modulating phases of the signal lights used in performing the multiple recording such that the phases of the signal lights are different each other by changing a phase distribution of said phase modulation means every time when the multiple recording is performed.
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