CST – Computer Simulation Technology

Title:
All-dielectric optical nanoantennas
Author(s):
Alexander E. Krasnok, Andrey E. Miroshnichenko, Pavel A. Belov, Yuri S. Kivshar
Source:
OPTICS EXPRESS
Vol./Issue/Date:
Volume: 20, Issue: 18, 27 August 2012
Year:
2012
Page(s):
20599-20604
Keywords:
All-dielectric optical nanoantennas
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.
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