Directional beaming of light from a nanoslit surrounded by metallic heterostructures

被引：47
作者：
Wang, B [1 ]
Wang, GP [1 ]
机构：
[1] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 01期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2161021
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
By modulating the dielectric properties of metallic surfaces with different metal materials, we theoretically proposed and numerically demonstrated that a nanoslit surrounded by metallic heterostructures constructed with metals Al and Ag can realize directional beaming of light. The beaming is due to the electromagnetic surface resonances modulated by the dielectric properties of the output metallic surface. The structure would be interesting for a variety of optical devices and elements for nanophotonics. (c) 2006 American Institute of Physics.
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