Abstract
An expression is obtained for the reflection coefficient of circularly polarized light normally incident on the film of a cholesteric liquid crystal with a variable helix pitch. It is shown that, in the case of a single defect (local change in the helix pitch), the spectrum of light reflection from a cholesteric acquires a dip corresponding to the defect mode. New qualitative features appear in the reflection spectrum of a cholesteric with two defects as the distance between them varies.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 80, No. 3, 2004, pp. 206–209.
Original Russian Text Copyright © 2004 by Shabanov, Vetrov, Karneev.
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Shabanov, A.V., Vetrov, S.Y. & Karneev, A.Y. Reflection spectrum of a cholesteric liquid crystal with structural defects. Jetp Lett. 80, 181–184 (2004). https://doi.org/10.1134/1.1808846
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DOI: https://doi.org/10.1134/1.1808846