环面
偶极子
电介质
磁偶极子
物理
纳米结构
光学
电场
联轴节(管道)
凝聚态物理
光电子学
材料科学
等离子体
量子力学
冶金
作者
Zhixin Li,Tong Wu,Xiangdong Zhang
出处
期刊:Optics Letters
[The Optical Society]
日期:2018-12-20
卷期号:44 (1): 57-57
被引量:15
摘要
The toroidal dipole (TD) and magnetic dipole (MD) are usually overlooked due to their relatively weak coupling to the electromagnetic fields. However, recent investigations have shown that they can play an important role in the optical response from some designed nanostructures. Different nanostructures have been designed for tailoring TD and MD excitations. Here we demonstrate that a single structure can be designed to tailor both TD and MD excitations. Near-perfect TD and MD excitations from the same structures have been realized by using various electric dipoles, which is very beneficial for designing optical functional devices such as nanoantennas and sensors.
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