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Fresnel diffraction of a Gaussian laser beam by polished metal cylinders
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
1990 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 29, no 3, p. 416-421Article in journal (Refereed) Published
Abstract [en]

A laser beam touching the periphery of a polished cylinder is subjected to both diffraction and reflection. Inthe area where diffracted light and reflected light interact the resulting intensity distribution differs from thepattern predicted by diffraction theory for a sharp edge. The difference increases with cylinder radius. Inthis paper it is shown that a good description of the resulting intensity pattern is obtained by adding thereflected light amplitude to the diffracted amplitude as predicted by the Fresnel-Kirchhoff theory for a sharpedge.

Abstract [en]

A laser beam touching the periphery of a polished cylinder is subjected to both diffraction and reflection. Inthe area where diffracted light and reflected light interact the resulting intensity distribution differs from thepattern predicted by diffraction theory for a sharp edge. The difference increases with cylinder radius. Inthis paper it is shown that a good description of the resulting intensity pattern is obtained by adding thereflected light amplitude to the diffracted amplitude as predicted by the Fresnel-Kirchhoff theory for a sharp edge.

Place, publisher, year, edition, pages
1990. Vol. 29, no 3, p. 416-421
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-6774DOI: 10.1364/AO.29.000416Scopus ID: 2-s2.0-84975633471Local ID: 511dc4b0-02af-11dc-ad0a-000ea68e967bOAI: oai:DiVA.org:ltu-6774DiVA, id: diva2:979660
Note
Godkänd; 1990; 20070515 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Benckert, LarsMolin, Nils-Erik

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