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Proceedings Paper

Electrically controlled scattering of light by nematic liquid crystal layers with random planar alignment: transformation of the scattered component
Author(s): Dmitry D. Yakovlev; Vladimir M. Ryabtsev; Maria M. Sherman; Dmitry A. Yakovlev
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Paper Abstract

Nematic layers with a fine-domain random planar structure obtained using nonrubbed polymer alignment films exhibit a mixed, partly regular and partly diffuse transmission with complementary high-contrast channeled spectra of the regular and diffuse transmittances. We show experimentally that the power of the light scattered by such a layer can be controlled by an applied electric field. We demonstrate that under certain conditions, when a layer with random planar alignment is illuminated by a quasimonochromatic light beam, the power of the scattered component of the light transmitted by the layer has a nonmonotonic dependence on the voltage applied to the layer and that there are electrically-induced states in which the layer scatters all the transmitted light and states in which the layer scatters only a very small portion of the transmitted light. These features allow using electrically-driven cells with such layers as polarization-independent tunable diffusers.

Paper Details

Date Published: 19 March 2015
PDF: 5 pages
Proc. SPIE 9448, Saratov Fall Meeting 2014: Optical Technologies in Biophysics and Medicine XVI; Laser Physics and Photonics XVI; and Computational Biophysics, 94482F (19 March 2015); doi: 10.1117/12.2180064
Show Author Affiliations
Dmitry D. Yakovlev, Saratov State Univ. (Russian Federation)
Vladimir M. Ryabtsev, Saratov State Univ. (Russian Federation)
Maria M. Sherman, Saratov State Univ. (Russian Federation)
Dmitry A. Yakovlev, Saratov State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 9448:
Saratov Fall Meeting 2014: Optical Technologies in Biophysics and Medicine XVI; Laser Physics and Photonics XVI; and Computational Biophysics
Elina A. Genina; Vladimir L. Derbov; Kirill V. Larin; Dmitry E. Postnov; Valery V. Tuchin, Editor(s)

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