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Phase evaluation and speckle averaging in pulsed television holography
Luleå tekniska universitet.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-8355-2414
1997 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 36, no 17, p. 3941-3947Article in journal (Refereed) Published
Abstract [en]

Double-pulsed (image-plane) TV holograms of transient bending waves in plates are recorded on separate frames in a CCD camera. A small angular offset between the reference and object beams, giving a spatial-frequency bias to the recorded pattern, permits quantitative evaluation of the phase of the interference. The Fourier spectrum of the image exhibits distinct parts that can be filtered out and inverse transformed to yield the phase information. Three different apertures of the imaging system are tested: a single slit, a double slit, and a three-hole aperture. Spatial speckle averaging is possible in the cases of the double-slit and three-hole apertures

Place, publisher, year, edition, pages
1997. Vol. 36, no 17, p. 3941-3947
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-10327DOI: 10.1364/AO.36.003941ISI: A1997XC80800012Scopus ID: 2-s2.0-0000910128Local ID: 91f0dcd0-0182-11dc-ad0a-000ea68e967bOAI: oai:DiVA.org:ltu-10327DiVA, id: diva2:983269
Note
Godkänd; 1997; 20070513 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Gren, Per

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