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Opt Express. 2012 Aug 27;20(18):20376-86. doi: 10.1364/OE.20.020376.

Boosting the directivity of optical antennas with magnetic and electric dipolar resonant particles.

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1
Institut Fresnel, CNRS, Aix-Marseille Université, Ecole Centrale Marseille Campus de Saint-Jérôme, 13013 Marseille, France.

Abstract

Dielectric particles supporting both magnetic and electric Mie resonances are shown to be able to either reflect or collect the light emitted by a single photon source. An analytical model accurately predicts the scattering behavior of a single dielectric particle electromagnetically coupled to the electric dipole transition moment of a quantum emitter. We derive near field extensions of the Kerker conditions in order to determine the conditions that strongly reduce scattering in either the forward or backward directions. This concept is then employed to design a lossless dielectric collector element whose directivity is boosted by the coherent scattering of both electric and magnetic dipoles.

PMID:
23037088
[Indexed for MEDLINE]
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