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Proceedings Paper

Laser induced reorientation process in dye-doped nematic systems: role of the azo-dye structure
Author(s): Nicoleta Eseanu; Constanta Dascalu; Ion Palarie; Cornelia Uncheselu
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Paper Abstract

Photoinduced molecular reorientation in dye-doped liquid crystal cells has been studied for a set of azodyes with a "pump-probe" optical device. The rotating angle of the nematic director as a function of irradiation time has been calculated. The lateral chemical groups of the azo-dye molecules have not an important influence on the orientation effect; this aspect supports the idea that the trans-cis photoisomerization of the dye molecules is the predominant mechanism responsible for the molecular reorientation in azo-dye-doped liquid crystal systems.

Paper Details

Date Published: 1 August 2007
PDF: 7 pages
Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 67850U (1 August 2007); doi: 10.1117/12.757843
Show Author Affiliations
Nicoleta Eseanu, Univ. Politehnica of Bucharest (Romania)
Constanta Dascalu, Univ. Politehnica of Bucharest (Romania)
Ion Palarie, Univ. of Craiova (Romania)
Cornelia Uncheselu, Technical Univ. of Civil Engineering (Romania)

Published in SPIE Proceedings Vol. 6785:
ROMOPTO 2006: Eighth Conference on Optics
Valentin I. Vlad, Editor(s)

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