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

QC 20100824
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.

NATURVETENSKAP Fysik Atom- och molekylfysik och optik hsv//swe
NATURAL SCIENCES Physical Sciences Atom and Molecular Physics and Optics hsv//eng
Electrooptic Imaging Microscopy; Congruent Litao3 Crystals; Lithium-Niobate Crystals; Internal Field; Reconstruction; Linbo3; Walls; Compensation; Optics; Origin
Optical physics
Optisk fysik

Av författaren/redakt...: Grilli, Simonett ...; Ferraro, P.; Paturzo, M.; Alfieri, D; De Natale, P

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