Compact reflection holographic recording system with high angle multiplexing

Mayumi Kanayasu; Takehumi Yamada; Shunsuke Takekawa; Kensuke Akieda; Akiyo Goto; Manabu Yamamoto

doi:10.1117/12.873694

7 February 2011 Compact reflection holographic recording system with high angle multiplexing

Mayumi Kanayasu, Takehumi Yamada, Shunsuke Takekawa, Kensuke Akieda, Akiyo Goto, Manabu Yamamoto

Proceedings Volume 7957, Practical Holography XXV: Materials and Applications; 79570X (2011) https://doi.org/10.1117/12.873694
Event: SPIE OPTO, 2011, San Francisco, California, United States

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. In light of this, we propose a novel holographic recording/reconstructing system: a dual-reference beam reflection system that is smaller than conventional systems such as the off-axis or co-axis types, and which is expected to increase the number of multiplexing 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, a reflection holographic memory system is explained in detail. In addition, the change in angle selectivity resulting from shrinkage of the medium is analyzed using the laminated film three-dimensional simulation method. As a result, we demonstrate that a dual-reference beam multiplex recording system is effective in reducing the influence of medium shrinkage.

Citation Download Citation

Mayumi Kanayasu, Takehumi Yamada, Shunsuke Takekawa, Kensuke Akieda, Akiyo Goto, and Manabu Yamamoto "Compact reflection holographic recording system with high angle multiplexing", Proc. SPIE 7957, Practical Holography XXV: Materials and Applications, 79570X (7 February 2011); https://doi.org/10.1117/12.873694

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KEYWORDS

Holography

Reflection

Multiplexing

Holograms

Holographic data storage systems

Microelectromechanical systems

Data storage

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