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Proceedings Paper

Asymmetry of Brag reflective band of cholesteric liquid crystal caused by Doping Molecules
Author(s): Sergei F. Lyuksyutov; Yuri A. Reznikov; Eugene A. Tikhonov
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Paper Abstract

We report the effect of Asymmetry of Bragg reflective band of Cholesteric Liquid CRystal caused by the excited doping molecules of 4-phenilchalkon. Two possible reasons giving the explanation of the effect are nonuniform concentration of khalkon molecules in the bulk and absorption of the molecules on the inner surfaces of the cells. The influence of nonuniform variations of pitch step and the refractive index modulation on the shape of Bragg band are studied numerically. It has been shown that the variations of pitch step are probably the reason of asymmetry of the Bragg band. The used model is based on solving the equations of the Theory of Dynamical Reflection for the wave propagates along the cholesteric director axis.

Paper Details

Date Published: 19 January 1996
PDF: 6 pages
Proc. SPIE 2731, International Liquid Crystal Workshop on Surface Phenomena, (19 January 1996); doi: 10.1117/12.230641
Show Author Affiliations
Sergei F. Lyuksyutov, Institute of Physics (Ukraine)
Yuri A. Reznikov, Institute of Physics (Ukraine)
Eugene A. Tikhonov, Institute of Physics (Ukraine)

Published in SPIE Proceedings Vol. 2731:
International Liquid Crystal Workshop on Surface Phenomena
Evgenij Rumtsev; Maxim Georg Tomilin, Editor(s)

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