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

Year: 2004

Authors: de Angelis M., De Nicola S., Finizio A., Pierattini G., Ferraro P., Grilli S., Paturzo M.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Sez. di Napoli, Via Campi Flegrei 34, Comprensorio “A. Olivetti”, 80078 Pozzuoli (NA), Italy;
Istituto di Cibernetica del CNR, Via Campi Flegrei 34, Comprensorio “A. Olivetti”, 80078 Pozzuoli (NA), Italy

Abstract: 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. (C) 2004 American Institute of Physics.

Journal/Review: APPLIED PHYSICS LETTERS

Volume: 85 (14)      Pages from: 2785  to: 2787

KeyWords: lithium niobate; internal field;
DOI: 10.1063/1.1797534

Citations: 45
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