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Image plane digital holographic microscope for the inspection of ferroelectric single crystals.
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SYSNO ASEP 0469206 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Image plane digital holographic microscope for the inspection of ferroelectric single crystals. Tvůrce(i) Psota, Pavel (UFP-V) RID, ORCID
Mokrý, Pavel (UFP-V) RID
Lédl, Vít (UFP-V) RID
Vojtíšek, Petr (UFP-V) RIDČíslo článku 121731 Zdroj.dok. Optical Engineering. - : SPIE - International Society for Optical Engineering - ISSN 0091-3286
Roč. 55, č. 12 (2016)Poč.str. 10 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Digital holography ; barium titanate ; domain pattern ; ferroelectric crystals ; holographic microscopy Vědní obor RIV JA - Elektronika a optoelektronika, elektrotechnika CEP GA14-32228S GA ČR - Grantová agentura ČR Institucionální podpora UFP-V - RVO:61389021 UT WOS 000396372900033 EID SCOPUS 84996503305 DOI 10.1117/1.OE.55.12.121731 Anotace One of the most important characteristics in the research and application of ferroelectric materials is the appearance of the domain patterns, which take place in phenomena such as ferroelectric phase transitions or ferroelectric switching. The ability to visualize domains is the key factor that enables the progress in the research of these extremely interesting phenomena. However, the three-dimensional visualization of the ferroelectric domain patterns in the whole volume of the ferroelectric single crystal is not a straightforward task. We present the optical method, which allows the acquisition of quantitative and qualitative data substantial for the ferroelectric domain research. The principle of the method is based on image plane digital holographic microscopy (DHM). We used DHM setup outcomes from a Mach–Zehnder type of interferometer and phase-shifting digital holography. The studied specimen is a single crystal of barium titanate. It is demonstrated that the use of solidstate thin-film transparent electrodes of indium tin oxide greatly reduces the unwanted wavefront distortions, which are frequently produced in liquid electrodes. Using this approach, it is possible to greatly improve the DHM measurements in low applied electric fields. Thanks to the properties of the setup, real-time observation of domain walls growth or existing patterns of the ferroelectric crystal is possible. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2017
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