Periodically Aligned Liquid Crystal: Potential application for projection displays
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 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 director in comparison with the preferable ideal profile are found via numerical modeling. Freedericksz transition is studied for this configuration. Coupled-mode theory is applied to light propagation through such 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.
Cite
@article{arxiv.cond-mat/0508555,
title = {Periodically Aligned Liquid Crystal: Potential application for projection displays},
author = {H. Sarkissian and N. Tabirian and B. Park and B. Zeldovich},
journal= {arXiv preprint arXiv:cond-mat/0508555},
year = {2007}
}
Comments
25 pages, 6 figures, 1 table