26 August 2015 Numerical evaluation of multilayer holographic data storage with a varifocal lens generated with a spatial light modulator
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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.
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Teruyoshi Nobukawa, Teruyoshi Nobukawa, Takanori Nomura, 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); doi: 10.1117/12.2187623; https://doi.org/10.1117/12.2187623
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