Plasmon Scattering from Single Subwavelength Holes

被引：70

作者：

Rotenberg, N. ^{[1
]}

Spasenovic, M. ^{[1
]}

Krijger, T. L. ^{[1
]}

le Feber, B. ^{[1
]}

Garcia de Abajo, F. J. ^{[2
]}

Kuipers, L. ^{[1
]}

机构：

[1] FOM Inst AMOLF, Ctr Nanophoton, NL-1098 XG Amsterdam, Netherlands

[2] CSIC, IQFR, E-28006 Madrid, Spain

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

EXTRAORDINARY OPTICAL-TRANSMISSION; LIGHT; METAMATERIALS; ARRAYS;

D O I：

10.1103/PhysRevLett.108.127402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We map the complex electric fields associated with the scattering of surface plasmon polaritons by single subwavelength holes of different sizes in thick gold films. We identify and quantify the different modes associated with this event, including a radial surface wave with an angularly isotropic amplitude. This wave is shown to arise from the out-of-plane electric dipole induced in the hole, and we quantify the corresponding polarizability, which is in excellent agreement with electromagnetic theory. Time-resolved measurements reveal a time delay of 38 +/- 18 fs between the surface plasmon polariton and the radial wave, which we attribute to the interaction with a broad hole resonance.

引用

页数：5

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