Switching Plasmon Resonances by Polarization of the Incident Light in Metamolecules

被引：4

作者：

Liu Jian-Qiang ^{[1
]}

Chen Jing ^{[2
]}

Wang Dian-Yuan ^{[1
]}

Zhou Yu-Xiu ^{[1
]}

Chen Zhen-Hua ^{[3
]}

Wang Ling-Ling ^{[3
]}

机构：

[1] Jiujiang Univ, Sch Sci, Jiujiang 332005, Peoples R China

[2] Nanjing Univ Posts & Telecommun, Coll Elect Sci & Engn, Nanjing 210046, Jiangsu, Peoples R China

[3] Hunan Univ, Sch Phys & Microelect, Changsha 410082, Hunan, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2013年 / 30卷 / 09期

基金：

中国国家自然科学基金;

关键词：

INDUCED TRANSPARENCY; FANO RESONANCES; NANOPARTICLES; ARRAYS;

D O I：

10.1088/0256-307X/30/9/097801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We numerically demonstrate the modulation of plasmon resonances in a metamolecule composed of metal bars and L-shaped nanoparticles by using the finite difference time domain method. Due to the dependence of electromagnetic coupling on polarization of the incident light, we show that the superradiant and subradiant states can be switched from ON and OFF resonantly. These two resonances are continuously adjustable as the polarization angle of incident wave changes. This feature reveals a possibility of dynamically switching the coupled plasmon resonances of an artificial microstructure and to construct functional metamaterials, which is helpful for nanophotonic devices such as filters and optical switches.

引用

页数：4

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