Evaluation of the internal field in lithium niobate ferroelectric domains by an interferometric method

We report on the evaluation of internal electric field of a ferroelectric engineered-domain in a LiNbO3 wafer crystal by detecting optical path length variation with a noninvasive interferometric inspection method. The lithium niobate wafer has been patterned and subjected to electric field poling t...

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Bibliographic Details
Published in:Applied physics letters 2004-10, Vol.85 (14), p.2785-2787
Main Authors: de Angelis, M., De Nicola, S., Finizio, A., Pierattini, G., Ferraro, P., Grilli, S., Paturzo, M.
Format: Article
Language:English
Subjects:
Engineering physics
Optical physics
Optisk fysik
TECHNOLOGY
TEKNIKVETENSKAP
Teknisk fysik
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Summary:We report on the evaluation of internal electric field of a ferroelectric engineered-domain in a LiNbO3 wafer crystal by detecting optical path length variation with a noninvasive interferometric inspection method. The lithium niobate wafer has been patterned and subjected to electric field poling to obtain two antiparallel ferroelectric domains separated by a single domain wall. The crystal has been mounted into one arm of a Mach–Zehnder-type interferometer to study the phase map and evaluate the effects of domain reversion by a digital holographic technique. Evaluation of the internal field and consequent variation of the electro-optical properties of the different domains is analyzed.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1797534