All-dielectric optical nanoantennas
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Open Access
- 23 August 2012
- journal article
- research article
- Published by Optica Publishing Group in Optics Express
- Vol. 20 (18) , 20599-20604
Abstract
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.Keywords
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