Nonradiating anapole condition derived from Devaney-Wolf theorem and excited in a broken-symmetry dielectric particle.

Autor: Labate G, Ospanova AK, Nemkov NA, Basharin AA, Matekovits L
Jazyk: angličtina
Zdroj: Optics express [Opt Express] 2020 Mar 30; Vol. 28 (7), pp. 10294-10307.
DOI: 10.1364/OE.28.010294
Abstrakt: In this work, we first derive the nonradiating anapole condition with a straightforward theoretical demonstration exploiting one of the Devaney-Wolf theorems for nonradiating currents. Based on the equivalent volumetric and surface electromagnetic sources, it is possible to establish a unique compact conditions directly from Maxwell's Equations in order to ensure nonradiating anapole state. In addition, we support our theoretical findings with a numerical investigation on a broken-symmetry dielectric particle, building block of a metamaterial structure, demonstrating through a detailed multiple expansion the nonradiating anapole condition behind these peculiar destructive interactions.
Databáze: MEDLINE