Original title: Large displacement and deformation measurement by frequency sweeping digital holography
Authors: Psota, P. ; Lédl, Vít ; Kaván, František ; Matoušek, O. ; Doleček, R.
Document type: Papers
Conference/Event: Conference on Photonics, Devices, and Systems VII, Praha (CZ), 20170828
Year: 2017
Language: eng
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.\n
Keywords: Absolute measurements; Digital holographic interferometry; Digital holography; Displacement measurement
Project no.: LO1206 (CEP), 8B16008 (CEP)
Funding provider: GA MŠk, GA MŠk
Host item entry: Proceedings of SPIE, ISBN 978-1-5106-0754-5

Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0291645

Permalink: http://www.nusl.cz/ntk/nusl-391507


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Research > Institutes ASCR > Institute of Plasma Physics
Conference materials > Papers