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Optical Engineering

Angular selectivity in volume holograms with spherical reference waves implemented by rotating a mirror
Author(s): Wei-Chia Su; Chung-Ming Chen
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Paper Abstract

A multiplexing scheme in volume holograms with a spherical reference wave implemented by rotating a mirror is presented. Diffraction angular selectivity of the mirror in the proposed holographic storage system is theoretically and experimentally investigated. The spherical reference waves in the presented multiplexing scheme can be replaced with plane reference waves; however, angular selectivity of the mirror with a plane reference wave is higher than that with a spherical reference wave in the system. Angular selectivity of the mirror using a spherical reference wave in the system can be increased by decreasing the distance between the mirror and the hologram. Unlike spherical reference waves, angular selectivity using a plane reference wave stays the same in this system. Although using spherical reference waves generates a lower angular selectivity, it also offers larger total accessible angular range for reference beams. Accordingly, using spherical reference waves in the proposed system will not sacrifice the storage capacity.

Paper Details

Date Published: 1 January 2007
PDF: 7 pages
Opt. Eng. 46(1) 015802 doi: 10.1117/1.2430504
Published in: Optical Engineering Volume 46, Issue 1
Show Author Affiliations
Wei-Chia Su, National Changhua Univ. of Education (Taiwan)
Chung-Ming Chen, National Changhua Univ. of Education (Taiwan)


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