19 August 1998 Reorientation of dye-doped liquid crystal under the action of circularly polarized light
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Proceedings Volume 3573, OPTIKA '98: 5th Congress on Modern Optics; (1998) https://doi.org/10.1117/12.320955
Event: OPTIKA '98: Fifth Congress on Modern Optics, 1998, Budapest, Hungary
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.
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Denis Andrienko, Denis Andrienko, Denis Fedorenko, Denis Fedorenko, Yuri A. Reznikov, Yuri A. Reznikov, } "Reorientation of dye-doped liquid crystal under the action of circularly polarized light", Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); doi: 10.1117/12.320955; https://doi.org/10.1117/12.320955
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