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On the relative intensity of Poisson’s spot

Reisinger, T.; Leufke, P. M.; Gleiter, H.; Hahn, H.

The Fresnel diffraction phenomenon referred to as Poisson’s spot or spot of Arago has, beside its
historical significance, become relevant in a number of fields. Among them are for example
fundamental tests of the super-position principle in the transition from quantum to classical physics
and the search for extra-solar planets using star shades. Poisson’s spot refers to the positive on-axis
wave interference in the shadow of any spherical or circular obstacle. While the spot’s intensity is equal
to the undisturbed field in the plane wave picture, its intensity in general depends on a number of
factors, namely the size and wavelength of the source, the size and surface corrugation of the
diffraction obstacle, and the distances between source, obstacle and detector. The intensity can be
calculated by solving the Fresnel–Kirchhoff diffraction integral numerically, which however tends to
be computationally expensive. We have therefore devised an analytical model for the on-axis intensity
of Poisson’s spot relative to the intensity of the undisturbed wave field and successfully validated it
both using a simple light diffraction setup and numerical methods. ... mehr

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Volltext §
DOI: 10.5445/IR/1000069033
DOI: 10.1088/1367-2630/aa5e7f
Zitationen: 4
Web of Science
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 1367-2630
KITopen-ID: 1000069033
HGF-Programm 43.22.01 (POF III, LK 01) Functionality by Design
Erschienen in New journal of physics
Verlag IOP Publishing
Band 19
Heft 3
Seiten 033022
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter Spot of Arago, Fresnel diffraction, surface corrugation, Poisson’s spot, Fresnel–Kirchhoff
Nachgewiesen in Scopus
Web of Science
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