A generalized Kerker condition for highly directive nanoantennas

被引：216

作者：

Alaee, R. ^{[1
]}

Filter, R. ^{[2
]}

Lehr, D. ^{[3
]}

Lederer, F. ^{[2
]}

Rockstuhl, C. ^{[1
,4
]}

机构：

[1] Karlsruhe Inst Technol, Inst Theoret Solid State Phys, D-76128 Karlsruhe, Germany

[2] Univ Jena, Abbe Ctr Photon, Inst Condensed Matter Theory & Solid State Opt, D-07743 Jena, Germany

[3] Univ Jena, Abbe Ctr Photon, Inst Appl Phys, D-07743 Jena, Germany

[4] Karlsruhe Inst Technol, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

OPTICS LETTERS | 2015年 / 40卷 / 11期

关键词：

SCATTERING; EMISSION; DIPOLAR; RESONANCES; ANTENNAS; RING;

D O I：

10.1364/OL.40.002645

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A nanoantenna with balanced electric and magnetic dipole moments, known as the first Kerker condition, exhibits a directive radiation pattern with zero backscattering. In principle, a nanoantenna can provide even better directionality if higher order moments are properly balanced. Here, we study a generalized Kerker condition in the example of a nanoring nanoantenna supporting electric dipole and electric quadrupole moments. Nanoring antennas are well suited since both multipole moments can be almost independently tuned to meet the generalized Kerker condition. (C) 2015 Optical Society of America

引用

页码：2645 / 2648

页数：4

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