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Proceedings Paper

Large displacement and deformation measurement by frequency sweeping digital holography
Author(s): Pavel Psota; Vít Lédl; František Kaván; Ondřej Matoušek; Roman Doleček
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Paper Abstract

Recently, a digital holographic method called Frequency Sweeping Digital Holography (FSDH) for high precision measurements of surface topography of mechanical parts has been introduced. The greatest advantage of the presented FSDH is the fact that the measurement is absolute. i.e. optical path difference is independently retrieved in every single pixel. This approach can therefore be used also for measurement of large displacements and deformation. FSDH is particularly suitable in cases where the common digital holographic methods fail due to e.g. 2π unambiguity problem or speckle decorrelation. Measurement method principles, setup details, an some features of the method are discussed.

Paper Details

Date Published: 1 December 2017
PDF: 7 pages
Proc. SPIE 10603, Photonics, Devices, and Systems VII, 106030C (1 December 2017); doi: 10.1117/12.2292846
Show Author Affiliations
Pavel Psota, Technical Univ. of Liberec (Czech Republic)
Vít Lédl, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
František Kaván, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Ondřej Matoušek, Technical Univ. of Liberec (Czech Republic)
Roman Doleček, Technical Univ. of Liberec (Czech Republic)

Published in SPIE Proceedings Vol. 10603:
Photonics, Devices, and Systems VII
Karel Fliegel; Petr Páta, Editor(s)

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