Open AccessOptical polarization grating induced liquid crystal micro-structure using azo-dye command layer
Author(s) -
V. V. Presnyakov,
K. E. Asatryan,
Tigran Galstian,
Vladimir G. Chigrinov
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.010558
Subject(s) - liquid crystal , optics , materials science , polarization (electrochemistry) , grating , electric field , diffraction efficiency , diffraction grating , planar , optoelectronics , diffraction , layer (electronics) , physics , chemistry , nanotechnology , computer graphics (images) , quantum mechanics , computer science
We create planar-periodic alignment in nematic liquid crystal (LC) cell by using a command layer of azo-dye molecules directly deposited on the cell substrates and exposed with two interfering laser beams of opposite circular polarizations. Permanent high efficiency polarization gratings are thus created. The diffraction efficiency of those gratings is controlled by a uniform electric field applied across the cell. The electro-optical properties of such polarization gratings are studied. Obtained gratings can be used for electrically controlled discrimination and detection of polarized components of light.