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Fresnel diffraction of a Gaussian laser beam by polished metal cylinders
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.
1990 (engelsk)Inngår i: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 29, nr 3, s. 416-421Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
1990. Vol. 29, nr 3, s. 416-421
HSV kategori
Forskningsprogram
Experimentell mekanik
Identifikatorer
URN: urn:nbn:se:ltu:diva-6774DOI: 10.1364/AO.29.000416Scopus ID: 2-s2.0-84975633471Lokal ID: 511dc4b0-02af-11dc-ad0a-000ea68e967bOAI: oai:DiVA.org:ltu-6774DiVA, id: diva2:979660
Merknad
Godkänd; 1990; 20070515 (cira)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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