Periodically aligned liquid crystal: Potential application for projection displays

    Authors

    H. Sarkissian; B. Park; N. Tabirian;B. Zeldovich

    Comments

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    Abbreviated Journal Title

    Mol. Cryst. Liquid Cryst.

    Keywords

    circular polarization; diffractive displays; liquid crystals; GRATINGS; PHOTOALIGNMENT; EFFICIENCY; DESIGN; Crystallography

    Abstract

    A nematic liquid crystal (NLC) layer with the anisotropy axis modulated at a fixed rate q in the transverse direction is considered. If the layer locally constitutes a half-wave plate, then the thin-screen approximation predicts 100% efficient diffraction of a normal incident wave. The possibility of implementing such a layer via anchoring at both surfaces of a cell with thickness L is studied as a function of parameter qL, and threshold values of this parameter are found for a variety of cases. Distortions of the structure of the director in comparison with the ideal profile are found via numerical modeling. Freedericksz transition is studied for this configuration. Coupled-mode theory is applied to light propagation through such a cell allowing to account for walk-off effects and effects of nematic distortion. In summary, this cell is suggested as a means for projection display; high efficiency is predicted.

    Journal Title

    Molecular Crystals and Liquid Crystals

    Volume

    451

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    1

    Last Page

    19

    WOS Identifier

    WOS:000237383700001

    ISSN

    1542-1406

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