Enhanced emission and light control with tapered plasmonic nanoantennas

被引：24
|
作者：
Maksymov, Ivan S. [1 ]
Davoyan, Arthur R. [1 ]
Kivshar, Yuri S. [1 ]
机构：
[1] Australian Natl Univ, Nonlinear Phys Ctr, Res Sch Phys & Engn, Canberra, ACT 0200, Australia
来源：
APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 08期
基金：
澳大利亚研究理事会;
关键词：
All Open Access; Green;
D O I：
10.1063/1.3629787
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We introduce a design of Yagi-Uda plasmonic nanoantennas for enhancing the directive gain and achieving control over the angular emission of light. We demonstrate that tapering of nanoantenna elements allows to decrease the inter-element spacing tenfold also enhancing the emission directivity. We find the optimal tapering angle that provides the maximum directivity enhancement and the minimum end-fire beamwidth. (C) 2011 American Institute of Physics. [doi:10.1063/1.3629787]
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页数：3
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