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Proceedings Paper

Excitation and propagation of optical surface-guided electromagnetic waves in chiral liquid crystals
Author(s): Vladimir A. Belyakov
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Paper Abstract

Excitation and propagation of surface guided electromagnetic waves (SGEW) of optical wave range in chiral liquid crystals (CLC) are theoretically examined in the framework of dynamical diffraction theory and an overview of the recent results in this field are presented. Unusual polarization properties and propagation diagram of SGEW are discussed. In the general case, the polarization properties of SGEW correspond to elliptical polarizations and are dependant on the SGEW propagation direction orientation relative to the director at the CLC surface, the SGEW frequency, and the film thickness. It is underlined that a qualitative difference related to the excitation and attenuation of SGEW in semi-infinite CLC and CLC films exists. The SGEW attenuation does not vanish even in nonabsorbing CLC films if total internal reflection at one of the film boundaries is absent. For CLC films, along with the conventional excitation of SGEW by means of attenuated total external reflection, it is possible to excite SGEW by a beam incident at the film from the side of a boundary where total internal reflection is absent. The above mentioned SGEW properties are illustrated by the results of calculations for typical experimental situations.

Paper Details

Date Published: 2 August 1995
PDF: 6 pages
Proc. SPIE 2372, Liquid Crystals: Materials Science and Applications, (2 August 1995); doi: 10.1117/12.215527
Show Author Affiliations
Vladimir A. Belyakov, Surface and Vacuum Research Ctr. (Russia)

Published in SPIE Proceedings Vol. 2372:
Liquid Crystals: Materials Science and Applications
Jozef Zmija, Editor(s)

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