Title

Periodically aligned liquid crystal: Potential application for projection displays

Authors

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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