All-dielectric optical nanoantennas

被引：485

作者：

Krasnok, Alexander E. ^{[1
]}

Miroshnichenko, Andrey E. ^{[2
]}

Belov, Pavel A. ^{[1
,3
]}

Kivshar, Yuri S. ^{[1
,2
]}

机构：

[1] Natl Res Univ Informat Technol, St Petersburg 197101, Russia

[2] Australian Natl Univ, Res Sch Phys & Engn, Nonlinear Phys Ctr, Canberra, ACT 0200, Australia

[3] Univ London, Queen Mary Coll, London E1 4NS, England

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 18期

基金：

英国工程与自然科学研究理事会; 澳大利亚研究理事会;

关键词：

EMISSION; NANOPARTICLES; ANTENNAS; LIGHT;

D O I：

10.1364/OE.20.020599

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study in detail a novel type of optical nanoantennas made of high-permittivity low-loss dielectric particles. In addition to the electric resonances, the dielectric particles exhibit very strong magnetic resonances at the nanoscale, that can be employed in the Yagi-Uda geometry for creating highly efficient optical nanoantennas. By comparing plasmonic and dielectric nanoantennas, we demonstrate that all-dielectric nanoantennas may exhibit better radiation efficiency also allowing more compact design. (C) 2012 Optical Society of America

引用

页码：20599 / 20604

页数：6

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