Controllable emission of a dipolar source coupled with a magneto-dielectric resonant subwavelength scatterer
Abstract
We demonstrate experimentally and theoretically that a local excitation of a single scatterer of relative dielectric permittivity {\epsilon} = 6 permits to excite broad dipolar and quadrupolar electric and magnetic resonances that shape the emission pattern in an un- precedented way. By suitably positioning the feed with respect to the sphere at a ?=3 distance, this compact antenna is able to spectrally sort the electromagnetic emission ei- ther in the forward or in the backward direction, together with a high gain in directivity. Materials with {\epsilon} = 6 can be found in the whole spectrum of frequencies promising Mie antennas to become an enabling technology in numbers of applications, ranging from quantum single photon sources to telecommunications.
Keywords
Cite
@article{arxiv.1309.6286,
title = {Controllable emission of a dipolar source coupled with a magneto-dielectric resonant subwavelength scatterer},
author = {Brice Rolly and Redha Abdeddaim and Jean-Michel Geffrin and Brian Stout and Nicolas Bonod},
journal= {arXiv preprint arXiv:1309.6286},
year = {2013}
}