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Proceedings Paper

Polarization gratings in sol-gel thin films investigated through the moving grating technique
Author(s): Raffaella Raschellà; Iari-Gabriel Marino; Pier Paolo Lottici; Danilo Bersani
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Paper Abstract

Intensity and pure polarization holographic gratings in silica-based sol-gel thin films, containing carbazole group and Disperse Red 1, are obtained by photoisomerization at 488 nm and are investigated by means of the moving grating technique (MGT). General equations relating the modulated MGT signal to amplitudes and phase shifts of the index and absorption gratings are derived for thin films in the case of different polarization configurations. It is shown that the technique, commonly used to characterize photorefractive gratings, is a powerful tool to investigate the orientation mechanisms responsible for the holographic polarization gratings formation.

Paper Details

Date Published: 9 June 2006
PDF: 8 pages
Proc. SPIE 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 62522E (9 June 2006); doi: 10.1117/12.677301
Show Author Affiliations
Raffaella Raschellà, Univ. di Parma (Italy)
Iari-Gabriel Marino, Univ. di Parma (Italy)
Pier Paolo Lottici, Univ. di Parma (Italy)
Danilo Bersani, Univ. di Parma (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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