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Proceedings Paper

Spectral analysis of shrinkage in holographic materials suitable for optical storage applications
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Paper Abstract

The aim of this work is to understand the effects of the shrinkage phenomenon in H-PDLC reflection gratings through the realtime analysis of their transmission spectra during the recording process. The realtime spectroscopic analysis of the samples showed a light intensity dependent free-radical polymerization indicated by a quick growth of the reflection peak whose corresponding diffraction efficiency, measured at normal incidence, is in the range of 40%-45% depending on the photopolymerization conditions. An optical shrinkage corresponding to a 4.3% displacement of the reflected wavelength from the expected value has been detected. This value of the shrinkage is in agreement to that mesaured in a similar system.

Paper Details

Date Published: 9 June 2006
PDF: 5 pages
Proc. SPIE 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 62520G (9 June 2006); doi: 10.1117/12.676538
Show Author Affiliations
Luigino Criante, Univ. Politecnica delle Marche (Italy)
K. Beev, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Daniele Eugenio Lucchetta, Univ. Politecnica delle Marche (Italy)
Francesco F. Simoni, Univ. Politecnica delle Marche (Italy)


Published in SPIE Proceedings Vol. 6252:
Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information
Yury Denisyuk; Ventseslav Sainov; Elena Stoykova, Editor(s)

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