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The study of the local director orientation in chiral liquid crystals

https://doi.org/10.17586/22208054201564470478

Abstract

The refraction of an extraordinary light wave in a layer of a chiral liquid crystal with the director rotated 90° has been studied. In this structure, if a light wave is incident on the surface of the liquid crystal at a large angle and the light passes through the whole layer, it refracts at the opposite boundary of the layer. The angular dependence of the light transmission through the liquid crystal layer has been researched. It has been demonstrated that the electric field changed the character of the refraction of the extraordinary wave and the light started to pass through the layer. The threshold voltage of the light transmission has been determined, as well as its dependence on the light incidence angle. The effect dynamics have been studied and the angular dependence of the light transmission decay time has been determined.

About the Authors

E. S. Kraynyukov
Saint Petersburg State University
Russian Federation

The Faculty of Physics

198504, St. Petersburg, Petrodvorets



A. A. Karetnikov
Saint Petersburg State University
Russian Federation

The Faculty of Physics

198504, St. Petersburg, Petrodvorets



A. P. Kovshik
Saint Petersburg State University
Russian Federation

The Faculty of Physics

198504, St. Petersburg, Petrodvorets



E. I. Ryumtsev
Saint Petersburg State University
Russian Federation

The Faculty of Physics

198504, St. Petersburg, Petrodvorets



E. V. Aksyonova
Saint Petersburg State University
Russian Federation

The Faculty of Physics

198504, St. Petersburg, Petrodvorets



V. P. Romanov
Saint Petersburg State University
Russian Federation

The Faculty of Physics

198504, St. Petersburg, Petrodvorets



References

1. E.V. Aksenova, A.A. Karetnikov, A.P. Kovshik et al. Return back of the extraordinary beam for oblique incidence in helical liquid crystals with large pitch. Europhys. Lett., 2005, 69, P. 68–74.

2. E.V. Aksenova, A.A. Karetnikov, A.P. Kovshik et al. Propagation of Light through a Forbidden Zone in Chiral Media. J. Opt. So. Amer., 2008, 6 (104), P. 909–919.

3. A.A. Karetnikov, N.A. Karetnikov, A.P. Kovshik, et al. Electric Field Effect on Refraction of Light in a Layer of Chiral Liquid Crystal with Large Pitch. Opt. Spectr., 2010, 6 (108), P. 947–953.

4. A.A. Karetnikov, N.A. Karetnikov, A.P. Kovshik et al. Local Dynamics of Director Reorientation under Electric Field in Helical LC Structure. Mol. Cryst. Liq. Cryst., 2012, 561, P. 97–106.

5. E.V. Aksenova, B.B. Divinsky, A.A. Karetnikov, et al. Particular the propagation of light in the cells of chiral liquid crystals in an external electric field. Journal of Experimental and Theoretical Physics, 2014, 2 (145), P. 369–380.


Review

For citations:


Kraynyukov E.S., Karetnikov A.A., Kovshik A.P., Ryumtsev E.I., Aksyonova E.V., Romanov V.P. The study of the local director orientation in chiral liquid crystals. Nanosystems: Physics, Chemistry, Mathematics. 2015;6(4):470-478. https://doi.org/10.17586/22208054201564470478

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ISSN 2220-8054 (Print)
ISSN 2305-7971 (Online)