Investigation of optical birefringence at ferroelectric domain wall in LiNbO3 by phase-shift polarimetry

Year: 2006

Authors: Paturzo M., Aiello L., Pignatiello F., Ferraro P., De Natale P., de Angelis M., De Nicola S.

Autors Affiliation: European Laboratory for Nonlinear Spectroscopy and Istituto Nazionale di Ottica Applicata del CNR, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
CNR – Istituto Nazionale di Ottica Applicata del , Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
Istituto di Cibernetica del CNR, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy

Abstract: We investigated the optical birefringence near the wall between two opposite domains in a z-cut congruent LiNbO3 through a full-field polarimetric method. We obtained a measure of domain wall width and determined the direction of the principal axes of stress-induced birefringence. Experimental data show that the principal axes of stress-induced birefringence result to be parallel or perpendicular to the domain wall, according to theoretical predictions. The domain wall width value ranges from 10 to about 50 mu m, showing a spatial variation that we can appreciate since the used method allows us to obtain two dimensionally resolved measurements. (c) 2006 American Institute of Physics.

Journal/Review: APPLIED PHYSICS LETTERS

Volume: 88 (15)      Pages from: 151918-1  to: 151918-3

KeyWords: Ferroelectricity; Measurements; Phase shift; Polarimeters; Stress analysis, Ferroelectric domain; Optical birefringence; Stress-induced birefringence, Birefringence
DOI: 10.1063/1.2194147

Citations: 8
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