Polarization-Insensitive Magnetic Quadrupole-Shaped and Electric Quadrupole-Shaped Fano Resonances Based on a Plasmonic Composite Structure
Chen Dong1 , Bao Li1 , Han-Xiao Li1 , Hui Liu1 , Meng-Qi Chen1 , Dong-Dong Li1 , Chang-Chun Yan1** , Dao-Hua Zhang2
1 Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 2211162 School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
Abstract ：A combined structure with the unit cell consisting of four sub-units with 90$^{\circ}$ rotation in turn is designed. Each of sub-units is composed of two gold rods in transverse arrangement and one gold rod in longitudinal arrangement. Simulating electromagnetic responses of the structure, we verify that the structure exhibits the double Fano resonances, which originate from the coupling between magnetic quadrupoles and electric dipoles and the coupling between electric quadrupoles and electric dipoles. Simulation results also demonstrate that the structure is polarization-insensitive and shows an analogue of electromagnetically induced transparency at the two Fano resonances. Such a plasmonic structure has potential applications in photoelectric elements.
收稿日期: 2016-02-24
出版日期: 2016-08-01
:
42.25.Bs
(Wave propagation, transmission and absorption)
78.66.Bz
(Metals and metallic alloys)
78.20.Bh
(Theory, models, and numerical simulation)
引用本文:
. [J]. 中国物理快报, 2016, 33(07): 74201-074201.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/33/7/074201
或
https://cpl.iphy.ac.cn/CN/Y2016/V33/I07/74201
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2016, Vol. 33 
