Nanowire Plasmon Excitation by Adiabatic Mode Transformation

被引：207

作者：

Verhagen, Ewold ^{[1
]}

Spasenovic, Marko ^{[1
]}

Polman, Albert ^{[1
]}

Kuipers, L. ^{[1
]}

机构：

[1] FOM Inst Atom & Mol Phys AMOLF, Ctr Nanophoton, NL-1098 XG Amsterdam, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 20期

关键词：

ELECTROMAGNETIC ENERGY-TRANSPORT; WAVE-GUIDES; METALLIC NANOWIRES; SURFACE-PLASMONS; BOUND MODES; NANOPARTICLES; GENERATION; LIGHT;

D O I：

10.1103/PhysRevLett.102.203904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show with both experiment and calculation that highly confined surface plasmon polaritons can be efficiently excited on metallic nanowires through the process of mode transformation. One specific mode in a metallic waveguide is identified that adiabatically transforms to the confined nanowire mode as the waveguide width is reduced. Phase- and polarization-sensitive near-field investigation reveals the characteristic antisymmetric polarization nature of the mode and explains the coupling mechanism.

引用

页数：4

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