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Proceedings Paper

Optical control of domain structures in ferroelectrics: mechanisms and applications
Author(s): Armen R. Poghosyan
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Paper Abstract

Several methods have been applied to obtain the crystals with regular domain structures. The most common ins the use of patterned electric field poling, but the quality of resultant periodically poled material can depend on a number of factors and periodicities below approximately 3 micrometers are difficult to produce however, particularly with simultaneously large aspect ratios. Here we present an alterative method for production of periodically patterned domain structures due to optical periodic poling, a technique involving the simultaneous applications of combined electrical and optical fields: the electric field is applied via planar electrodes, while light is used to define those regions where domain inversion should occur. The optical poling route therefore offers a potentially simpler method, effectively eliminating the photolithographic patterning steps. Using interferometric methods, the periodicity of optically induced domain structures is a function of laser wavelength, and intersection angle of the two interfering beams, and hence is easily changed. We present also the investigations of the mechanisms of optical control of domain structures in ferroelectrics, in particularly the roles of the various internal field components, their origins and dynamic behavior following domain reversal.

Paper Details

Date Published: 14 June 2000
PDF: 6 pages
Proc. SPIE 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics, (14 June 2000); doi: 10.1117/12.388197
Show Author Affiliations
Armen R. Poghosyan, Institute for Physical Research (Armenia)

Published in SPIE Proceedings Vol. 3992:
Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics
Christopher S. Lynch, Editor(s)

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