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arXiv · 1206.5597

All-Dielectric Optical Nanoantennas

Alexander E. Krasnok·Andrey E. Miroshnichenko·Pavel A. Belov·Yuri S. Kivshar
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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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Alexander E. Krasnok, Andrey E. Miroshnichenko, Pavel A. Belov, Yuri S. Kivshar. 2012-06-25. All-Dielectric Optical Nanoantennas. https://doi.org/10.1063/1.4750083

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