Studies of photorefractive properties of a novel dye-doped nematic liquid crystal system

We examine here photorefractive and dielectric properties of a novel system: nematic liquid crystal mixture doped with 1‐(5‐methylfuran‐2‐yl)‐3‐(4‐dimethylaminophenyl)‐propenon dye. Kinetics of formation of refractive index gratings induced by light in a two‐wave mixing experiment in this dye‐doped...

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Bibliographic Details
Published in:Advanced materials for optics and electronics 2000-03, Vol.10 (2), p.55-67
Main Authors: Miniewicz, A., Komorowska, K., Koval'chuk, O. V., Vanhanen, J., Sworakowski, J., Kurik, M. V.
Format: Article
Language:English
Subjects:
liquid crystal devices
liquid crystals
non-linear optics materials
photorefractive properties
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Summary:We examine here photorefractive and dielectric properties of a novel system: nematic liquid crystal mixture doped with 1‐(5‐methylfuran‐2‐yl)‐3‐(4‐dimethylaminophenyl)‐propenon dye. Kinetics of formation of refractive index gratings induced by light in a two‐wave mixing experiment in this dye‐doped nematic liquid crystal together with dielectric relaxation and ionic conductivity are investigated. We perform a degenerate four‐wave mixing experiment, enabling us to observe the generation of an optical phase conjugation signal by the studied system, and report on some optical microscope observations of hydrodynamic instabilities related to charge injection from the electrodes and ionic current flow through liquid crystal layer. We discuss the results in reference to other similar liquid crystalline materials. Copyright © 2000 John Wiley & Sons, Ltd.
ISSN:1057-9257
1099-0712
DOI:10.1002/1099-0712(200003/04)10:2<55::AID-AMO398>3.0.CO;2-Y