Application of Infrared Digital Holography for Characterization of Inhomogeneities and Voluminous Defects of Single Crystals on the Example of ZnGeP2

Autor: Victor Dyomin, Alexander Gribenyukov, Sergey Podzyvalov, Nikolay Yudin, Mikhail Zinoviev, Igor Polovtsev, Alexandra Davydova, Alexey Olshukov
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Applied Sciences, Vol 10, Iss 2, p 442 (2020)
Druh dokumentu: article
ISSN: 2076-3417
DOI: 10.3390/app10020442
Popis: In this work, the method of IR digital holography intended for detection of volumetric defects in ZnGeP2 single crystals has been tested. The holographic method is verified by a comparison of the results obtained with the data obtained by other methods. The spatial resolution of the experimental setup is ~15−20 µm. The volumetric defects of the ZnGeP2 crystal structure (in samples with thickness up to 50 mm) such as growth striations, dislocation chain, and inclusions of the second phase (Zn3P2) shaped as needles up to ~100 µm long and ~10 µm wide have been visualized by the method of IR digital holography.
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