期刊
OPTICS EXPRESS
卷 20, 期 18, 页码 20599-20604出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.020599
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资金
- Ministry of Education and Science in Russia
- Australian Research Council
- EPSRC [EP/E053025/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E053025/1] Funding Source: researchfish
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
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