Plasmon resonance modes in two-dimensional arrays of metallic nanopillars

被引：8
|
作者：
Paudel, Hari P. [1 ]
Baroughi, Mahdi Farrokh [1 ]
Bayat, Khadijeh [1 ]
机构：
[1] S Dakota State Univ, Dept Elect Engn & Comp Sci, Brookings, SD 57007 USA
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2010年 / 27卷 / 09期
基金：
美国国家科学基金会;
关键词：
SURFACE-PLASMONS; PHOTONIC CRYSTALS; GRATINGS; ENHANCEMENT;
D O I：
10.1364/JOSAB.27.001693
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Surface plasmon polaritons (SPPs) and localized plasmon resonance modes in two-dimensional arrays of silver nanopillars on silver surface were analyzed using the three-dimensional finite-difference time domain method. What we believe to be a new type of plasmon resonance modes at oblique incident angle for p-polarized light was observed in two-dimensional arrays of silver nanopillars in a square lattice. This resonance mode is associated with two SPP-like electric field patterns along the metal surface. We found that this resonance mode is localized and excited by the transverse polarization mode of nanopillars. Using Poynting vector plots, it was observed that the plasmon resonances in arrays of nanopillars are always associated with large energy cyclones near the nanopillars leading to light absorption. (C) 2010 Optical Society of America
引用
收藏
页码：1693 / 1697
页数：5
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