Abstract
A random phase mask is often used for Fourier transform holography to improve its recording and reconstruction characteristics. However, a conventional random phase pattern has the disadvantage of expanding the recording spot, which is caused by the high-resolution phase modulation. Previously, we proposed a random phase pattern that makes the recording spot narrower than the conventional one with maintaining a moderate reconstruction quality. In the present study, we apply the proposed random phase pattern to computer-generated binary holograms and evaluate both the hologram distribution and reconstruction quality in terms of practical holographic memory systems. The results confirm the effectiveness of the random phase in the reconstruction for an elementary data pattern.
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This study is partly supported by the Japan Science and Technology Agency (JST) under the Strategic Promotion of Innovative Research and Development Program.
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Hiramoto, S., Fukuda, T. & Emoto, A. Randomly displaced phase distribution design for computer-generated binary hologram with narrow recording spots. Opt Rev 25, 509–516 (2018). https://doi.org/10.1007/s10043-018-0441-4
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DOI: https://doi.org/10.1007/s10043-018-0441-4