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Proceedings Paper

Reorientation of dye-doped liquid crystal under the action of circularly polarized light
Author(s): Denis Andrienko; Denis Fedorenko; Yuri A. Reznikov
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Paper Abstract

We studied the effective interaction of the angular momentum of light with a liquid crystal (LC) doped with azo-dye. The experiments were carried out in a combined cell with one substrate providing strong unidirectional planar alignment of LC and the other covered by isotropic polymer layer providing a degenerated planar alignment. The effect manifests itself as azimuth reorientation of the liquid crystal director under the action of circularly polarized light in the absorption band of azo-dye. The new orientation of LC was captured by the command surface because of a light-induced alignment memory effect. To describe the experimental dependencies we solved the self-consistent problem of the propagation of a circularly polarized light in the absorbing nonlinear media using the geometric optics approximation. Comparing experimental data with numerical evaluation we obtain the basic parameters of the system: the orientation nonlinearly coefficient and the value of anchoring of the director with the polymer surface.

Paper Details

Date Published: 19 August 1998
PDF: 5 pages
Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); doi: 10.1117/12.320955
Show Author Affiliations
Denis Andrienko, Institute of Physics (Ukraine)
Denis Fedorenko, Institute of Physics (Ukraine)
Yuri A. Reznikov, Institute of Physics (Italy)

Published in SPIE Proceedings Vol. 3573:
OPTIKA '98: 5th Congress on Modern Optics
Gyorgy Akos; Gabor Lupkovics; Andras Podmaniczky, Editor(s)

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