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Proceedings Paper

New holographic gratings recorded in polymer-dispersed liquid crystals
Author(s): K. Beev; L. Criante; D. E. Lucchetta; F. Simoni; S. Sainov
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Paper Abstract

Holographic gratings recorded in polymer-dispersed liquid crystals (H-PDLC) are very interesting as systems for electrically switchable diffractive devices. From the early 1990s, experiments, Bragg and Raman-Nath gratings are recorded in PDLC. A very thorough review of these investigations is published recently. In this paper we report our first experiments for H-PDLC gratings, recorded in two different optical arrangements using total internal reflection (TIR): 1) Stetson's scheme - when low and high spatial frequencies gratings are simultaneously recorded in the PDLC's volume, and 2) Nassenstein's scheme - when low or high spatial frequency grating is recorded with evanescent waves in very thin layer of the PDLC. A polarization grating recorded by the Stetson's scheme is also reported. The realtime diffraction efficiency dependence during the recording and the polarization characteristics are investigated.

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, 62522B (9 June 2006); doi: 10.1117/12.677298
Show Author Affiliations
K. Beev, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
L. Criante, Univ. Politecnica delle Marche (Italy)
D. E. Lucchetta, Univ. Politecnica delle Marche (Italy)
F. Simoni, Univ. Politecnica delle Marche (Italy)
S. Sainov, Central Lab. of Optical Storage and Processing of Information (Bulgaria)


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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