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DOI: 10.5445/IR/1000051373
Originalveröffentlichung
DOI: 10.1364/OE.23.033044
Scopus
Zitationen: 16
Web of Science
Zitationen: 16

Exact dipolar moments of a localized electric current distribution

Fernandez-Corbaton, I.; Nanz, S.; Alaee, R.; Rockstuhl, C.

Abstract:
The multipolar decomposition of current distributions is used in many branches of physics. Here, we obtain new exact expressions for the dipolar moments of a localized electric current distribution. The typical integrals for the dipole moments of electromagnetically small sources are recovered as the lowest order terms of the new expressions in a series expansion with respect to the size of the source. All the higher order terms can be easily obtained. We also provide exact and approximated expressions for dipoles that radiate a definite polarization handedness (helicity). Formally, the new exact expressions are only marginally more complex than their lowest order approximations.


Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für Theoretische Festkörperphysik (TFP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 1094-4087
URN: urn:nbn:de:swb:90-513735
KITopen-ID: 1000051373
HGF-Programm 43.23.01 (POF III, LK 01)
Erschienen in Optics Express
Band 23
Heft 26
Seiten 33044-33064
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Nachgewiesen in Web of Science
Scopus
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