Polarization-universal bandgap in periodically twisted nematics

    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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