Photopolymer Recording Materials

Askham, Fred; Dhar, Lisa

doi:10.1002/9780470666531.ch6

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2012

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“…In this system, a photopolymer is a promising recording material because it shows a high diffraction efficiency and a long-term archival stability. The recording sensitivity of the photopolymer 3) is three decades higher than that of a photorefractive crystal. 4) Thus, a recording system, in which a photopolymer material is used, has the possibility of achieving a high data transfer rate because of its high recording sensitivity.…”

Section: Introductionmentioning

confidence: 95%

Compensation Method for Phase Fluctuation in Holographic Data Storage

Ishii

Muroi

Kinoshita

et al. 2012

Jpn. J. Appl. Phys.

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A method that records accurate information of an object beam is discussed. Before conducting our experiment, the effect of phase fluctuation was calculated using the coupled wave theory. Simulation results showed that the fringe amplitude decreased as the phase noise level increased. We propose a method for phase compensation even if a modulated object beam, which consists of black-and-white pixels, is used with a millisecond recording time. A recording experiment was conducted, in which even pages were without compensation and odd pages were with compensation with 100 angle multiplexing. The obtained results indicate that the mean brightness was increased by 2 ×105, and the mean error count for each page was reduced from 17 to 13 by improving the diffraction efficiency.

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Section: Introductionmentioning

confidence: 95%