Dielectric antennas - a suitable platform for controlling magnetic dipolar emission

被引：166

作者：

Schmidt, M. K. ^{[1
,2
]}

Esteban, R. ^{[1
,2
]}

Saenz, J. J. ^{[1
,2
,3
,4
]}

Suarez-Lacalle, I. ^{[3
,4
]}

Mackowski, S. ^{[5
]}

Aizpurua, J. ^{[1
,2
]}

机构：

[1] CSIC UPV EHU, DIPC, Donostia San Sebastian 20018, Spain

[2] CSIC UPV EHU, Ctr Fis Mat, Donostia San Sebastian 20018, Spain

[3] Univ Autonoma Madrid, Dept Fis Mat Condensada, E-28049 Madrid, Spain

[4] Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain

[5] Nicolaus Copernicus Univ, Inst Phys, Opt Hybrid Nanostruct Grp, PL-87100 Torun, Poland

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 13期

关键词：

MOLECULE; DECAY; RATES;

D O I：

10.1364/OE.20.013636

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Plasmonic nanoparticles are commonly used to tune and direct the radiation from electric dipolar emitters. Less progress has been made towards understanding complementary systems of magnetic nature. However, it has been recently shown that high-index dielectric spheres can act as effective magnetic antennas. Here we explore the concept of coupling dielectric magnetic antennas with either an electric or magnetic dipolar emitter in a similar fashion to the purely electric systems reported previously. We investigate the enhancement of radiation from systems comprising admixtures of these electric and magnetic elements and perform a full study of its dependence on the distance and polarization of the emitter with respect to the antenna. A comparison to the plasmon antennas reveals remarkable symmetries between electric and magnetic systems, which might lead to novel paradigms in the design of nanophotonic devices that involve magnetic activity. (C) 2012 Optical Society of America

引用

页码：13636 / 13650

页数：15

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