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Single Shot Dual-Wavelength Digital Holography: Calibration Based on Speckle Displacements
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.ORCID iD: 0000-0002-7566-3656
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0003-4879-8261
2014 (English)In: International Journal of Optomechatronics, ISSN 1559-9612, Vol. 8, no 4, p. 326-339Article in journal (Refereed) Published
Abstract [en]

We present a calibration method which allows single shot dual wavelength online shape measurement in a disturbed environment. Effects of uncontrolled carrier frequency filtering are discussed as well. We demonstrate that phase maps and speckle displacements can be recovered free of chromatic aberrations. To our knowledge, this is the first time that a single shot dual wavelength calibration is reported by defining a criteria to make the spatial filtering automatic avoiding the problems of manual methods. The procedure is shown to give shape accuracy of 35 µm with negligible systematic errors using a synthetic wavelength of 1.1 mm.

Place, publisher, year, edition, pages
2014. Vol. 8, no 4, p. 326-339
National Category
Applied Mechanics Computational Mathematics
Research subject
Experimental Mechanics; Scientific Computing
Identifiers
URN: urn:nbn:se:ltu:diva-3966DOI: 10.1080/15599612.2014.942932ISI: 000343656700010Scopus ID: 2-s2.0-84908215753Local ID: 1d0489e0-ecaf-433b-911f-feff8edfa5dbOAI: oai:DiVA.org:ltu-3966DiVA, id: diva2:976828
Note

Validerad; 2014; Bibliografisk uppgift: Special Issue: Advances in Optical Imaging and Metrology - Selected papers from the conference Fringe 2013; 20140815 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-08-16Bibliographically approved

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Khodadad, DavoodBergström, PerHällstig, EmilSjödahl, Mikael

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