In-situ visualization, monitoring and analysis of electric field domain reversal process in ferroelectric crystals by digital holography

Year: 2004

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

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

Abstract: In-situ monitoring of domain reversal in congruent lithium niobate by a digital holographic technique is described. While the ferroelectric polarization is reversed by electric field poling, the two-dimensional distribution of the phase shift, due mainly to the linear electro-optic and piezoelectric effects, is measured and visualized. Digital holography is used to reconstruct both amplitude and phase of the wavefield transmitted by the sample to reveal the phase shift induced by adjacent reversed domains during the poling. The resulting movies of both amplitude and phase maps, for in-situ visualization of domain pattern formation, are shown. The possibility of using the technique as tool for monitoring in real-time the periodic poling of patterned samples is discussed. (C) 2004 Optical Society of America.

Journal/Review: OPTICS EXPRESS

Volume: 12 (9)      Pages from: 1832  to: 1842

KeyWords: Crystals; Electric field effects; Electrodes; Electrooptical effects; Holography; Interferometers; Lithium niobate; Morphology; Nonlinear optics; Phase shift; Polarization; Visualization, Computer holography; Elecro-optic materials; Periodic poling; Quasi-phase-matching (QPM), Ferroelectric materials
DOI: 10.1364/OPEX.12.001832

Citations: 54
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