Laser induced reorientation process in dye-doped nematic systems: role of the azo-dye structure

Nicoleta Eseanu; Constanta Dascalu; Ion Palarie; Cornelia Uncheselu

doi:10.1117/12.757843

1 August 2007 Laser induced reorientation process in dye-doped nematic systems: role of the azo-dye structure

Nicoleta Eseanu, Constanta Dascalu, Ion Palarie, Cornelia Uncheselu

Proceedings Volume 6785, ROMOPTO 2006: Eighth Conference on Optics; 67850U (2007) https://doi.org/10.1117/12.757843
Event: ROMOPTO 2006: Eighth Conference on Optics, 2006, Sibiu, Romania

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.

Citation Download Citation

Nicoleta Eseanu, Constanta Dascalu, Ion Palarie, and Cornelia Uncheselu "Laser induced reorientation process in dye-doped nematic systems: role of the azo-dye structure", Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 67850U (1 August 2007); https://doi.org/10.1117/12.757843

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