Title

Surface-activated photorefractivity and electro-optic phenomena in liquid crystals

Authors

Authors

N. V. Tabiryan;C. Umeton

Comments

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Abbreviated Journal Title

J. Opt. Soc. Am. B-Opt. Phys.

Keywords

LIGHT; Optics

Abstract

Surface-localized electromagnetic fields can induce strong reorientation of liquid crystals (LC's), thus making it possible to observe a whole new class of opto-electronic phenomena. We show the feasibility of reorientation of a LC by a spatially inhomogeneous electric field localized on a photorefractive substrate. The modulation of the space-charge density in the plane of the photorefractive substrate generates a component of the electric field, which is normal to the LC layer. The drift of ions enforced by that field can result in a surface-charge modulation pattern that can become permanent owing to adsorption of ions at the boundaries of the LC cell. The obtained results present large fundamental and practical interest for the visualization of surface-localized electric fields and the development of new principles of optical information processing and storage. (C) 1998 Optical Society of America.

Journal Title

Journal of the Optical Society of America B-Optical Physics

Volume

15

Issue/Number

7

Publication Date

1-1-1998

Document Type

Article

Language

English

First Page

1912

Last Page

1917

WOS Identifier

WOS:000074688700011

ISSN

0740-3224

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