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Proceedings Paper

Investigation on influence of wavefront property of reference beams on the quality of images reconstructed from holograms
Author(s): Wei Song; Shiquan Tao; Dayong Wang
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Paper Abstract

In this paper, the quality of the reconstructed images by general plane, Gaussian, speckle imaging, and speckle reference beams, is investigated by numerical simulation and preliminary experiments, and is quantitatively evaluated using the signal to noise ratio (SNR) and the loss of signal to noise ratio (LSNR) for the purpose of comparing experimental results. The results of numerical simulation show that with plane reference, the quality of reconstructed images are very good and with Gaussian beam the noise of the reconstructed images is restrained but the boundary information is also weakened. What is worthy to be noticed, the results of both numerical simulation and preliminary experiments show that with speckle reference, the quality of the images is not good; although with the speckle imaging reference that is the image of the random phase, the situation is a little better. So, it is necessary to improve the quality of the reconstructed images when the random-phase multiplexing technology is to be used for high density storage. And in order to implement high-density holographic storage with high reconstruct quality, the reference beam must be optimized.

Paper Details

Date Published: 3 June 2010
PDF: 7 pages
Proc. SPIE 7730, Optical Data Storage 2010, 77301V (3 June 2010); doi: 10.1117/12.860820
Show Author Affiliations
Wei Song, Beijing Univ. of Technology (China)
Shiquan Tao, Beijing Univ. of Technology (China)
Dayong Wang, Beijing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 7730:
Optical Data Storage 2010
Susanna Orlic; Ryuichi Katayama, Editor(s)

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