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Proceedings Paper

Digital holographic tomography method for 3D observation of domain patterns in ferroelectric single crystals
Author(s): Pavel Mokrý; Pavel Psota; Kateřina Steiger; Jan Václavík; David Vápenka; Roman Doleček; Petr Vojtíšek; Juraj Sládek; Vít Lédl
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Paper Abstract

We report on the development and implementation of the digital holographic tomography for the three-dimensio- nal (3D) observations of the domain patterns in the ferroelectric single crystals. Ferroelectric materials represent a group of materials, whose macroscopic dielectric, electromechanical, and elastic properties are greatly in uenced by the presence of domain patterns. Understanding the role of domain patterns on the aforementioned properties require the experimental techniques, which allow the precise 3D measurements of the spatial distribution of ferroelectric domains in the single crystal. Unfortunately, such techniques are rather limited at this time. The most frequently used piezoelectric atomic force microscopy allows 2D observations on the ferroelectric sample surface. Optical methods based on the birefringence measurements provide parameters of the domain patterns averaged over the sample volume. In this paper, we analyze the possibility that the spatial distribution of the ferroelectric domains can be obtained by means of the measurement of the wavefront deformation of the transmitted optical wave. We demonstrate that the spatial distribution of the ferroelectric domains can be determined by means of the measurement of the spatial distribution of the refractive index. Finally, it is demonstrated that the measurements of wavefront deformations generated in ferroelectric polydomain systems with small variations of the refractive index provide data, which can be further processed by means of the conventional tomographic methods.

Paper Details

Date Published: 11 November 2016
PDF: 10 pages
Proc. SPIE 10151, Optics and Measurement International Conference 2016, 101510J (11 November 2016); doi: 10.1117/12.2257327
Show Author Affiliations
Pavel Mokrý, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Pavel Psota, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Kateřina Steiger, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Jan Václavík, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
David Vápenka, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Roman Doleček, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Petr Vojtíšek, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Juraj Sládek, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Vít Lédl, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)


Published in SPIE Proceedings Vol. 10151:
Optics and Measurement International Conference 2016
Jana Kovacicinova, Editor(s)

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