Title

Polarization-universal bandgap in periodically twisted nematics

Authors

Authors

H. Sarkissian; B. Y. Zeldovich;N. V. Tabiryan

Comments

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Abbreviated Journal Title

Opt. Lett.

Keywords

LIQUID-CRYSTALS; SCATTERING; Optics

Abstract

Cholesteric liquid crystals are known to possess bandgap and exhibit strong reflection for one of two circular polarizations of light. We suggest a periodically twisted nematic liquid crystal as a medium, which possesses bandgap and exhibits strong reflection for any polarization of normally incident light. Two possible structures are considered: a sinusoidal modulation profile and a rectangular modulation profile. In both cases, the maximum bandgap, of a periodically twisted structure is approximately twice as narrow as that of cholesterics. However, the polarization properties of these structures may make them more advantageous than cholesterics in a variety of applications. (c) 2006 Optical Society of America

Journal Title

Optics Letters

Volume

31

Issue/Number

11

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

1678

Last Page

1680

WOS Identifier

WOS:000237728200030

ISSN

0146-9592

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