Abstract

Holographic memory systems have been widely researched since 1963. However, the size of the drives required and the deterioration of reconstructed data resulting from shrinkage of the medium have made practical use of a hologram memory difficult. We propose a novel holographic recording/reconstructing system: a dual-reference beam reflection system that is expected to increase the storage capacity in angle multiplexed recording. In this multiplex recording system, two laser beams are used as reference beams, and the recorded data are reconstructed stably, even if there is shrinkage of the recording medium. In this paper, we demonstrate that a dual-reference beam multiplex recording system is effective in reducing the influence of medium shrinkage at reflection type hologram recording.

© 2011 Optical Society of America