Cavity modes and their excitations in elliptical plasmonic patch nanoantennas

被引：27

作者：

Chakrabarty, Ayan ^{[1
,2
]}

Wang, Feng ^{[1
,2
]}

Minkowski, Fred ^{[1
,2
]}

Sun, Kai ^{[3
]}

Wei, Qi-Huo ^{[1
,2
]}

机构：

[1] Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA

[2] Kent State Univ, Dept Chem Phys, Kent, OH 44242 USA

[3] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 11期

基金：

美国国家科学基金会;

关键词：

ENHANCED RAMAN-SCATTERING; INFRARED PERFECT ABSORBER; SURFACE-PLASMONS; LIGHT; FLUORESCENCE; SPECTROSCOPY; FREQUENCIES; EMISSION; ANTENNAS; VOLUME;

D O I：

10.1364/OE.20.011615

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present experimental and theoretical studies of two dimensional periodic arrays of elliptical plasmonic patch nanoantennas. Experimental and simulation results demonstrate that the azimuthal symmetry breaking of the metal patches leads to the occurrence of even and odd resonant cavity modes and the excitation geometries dependent on their modal symmetries. We show that the cavity modes can be described by the product of radial and angular Mathieu functions with excellent agreements with both simulations and experiments. The effects of the patch periodicity on the excitation of the surface plasmon and its coupling with the cavity modes are also discussed. (C) 2012 Optical Society of America

引用

页码：11615 / 11624

页数：10

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