Numerical evaluation of multilayer holographic data storage with a varifocal lens generated with a spatial light modulator

Teruyoshi Nobukawa; Takanori Nomura

doi:10.1117/12.2187623

26 August 2015 Numerical evaluation of multilayer holographic data storage with a varifocal lens generated with a spatial light modulator

Teruyoshi Nobukawa, Takanori Nomura

Author Affiliations +

Proceedings Volume 9587, Optical Data Storage 2015; 958703 (2015) https://doi.org/10.1117/12.2187623
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

A multilayer recording using a varifocal lens generated with a phase-only spatial light modulator (SLM) is proposed. A phase-only SLM is used for not only improving interference efficiency between signal and reference beams but also shifting a focus plane along an optical axis. A focus plane can be shifted by adding a spherical phase to a phase modulation pattern displayed on a phase-only SLM. A focal shift with adding a spherical phase was numerically confirmed. In addition, shift selectivity and recording performance of the proposed multilayer recording method were numerically evaluated in coaxial holographic data storage.

Citation Download Citation

Teruyoshi Nobukawa and Takanori Nomura "Numerical evaluation of multilayer holographic data storage with a varifocal lens generated with a spatial light modulator", Proc. SPIE 9587, Optical Data Storage 2015, 958703 (26 August 2015); https://doi.org/10.1117/12.2187623

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