Demonstration of Holographic Read-Only-Memory Mastering, Replication, and Playback with a Compact Reader

概要

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Development prototype systems for holographic read-only-memory (ROM) are demonstrated, capable of high density recording at 406.7 nm wavelength with 0.71 numerical aperture optics. A phase-conjugate Fourier transform lens is developed for improved capacity and tolerances and incorporated into a fully functional compact reader about 1 cm in height. The capacity target for the first generation is 4 Gbytes in a $42\times 35$ mm2 media card. Two-step mastering, replication, and playback are demonstrated for digital audio stored in 125 holograms.
Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
2008-07-25