Surface plasmons at single nanoholes in Au films

被引：232

作者：

Yin, L

Vlasko-Vlasov, VK

Rydh, A

Pearson, J

Welp, U

Chang, SH

Gray, SK

Schatz, GC

Brown, DB

Kimball, CW

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA

[3] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[4] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 03期

关键词：

D O I：

10.1063/1.1773362

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The generation of surface plasmon polaritons (SPPs) at isolated nanoholes in 100 nm thick Au films is studied using near-field scanning optical microscopy. Finite-difference time-domain calculations, some explicitly including a model of the scanning tip, are used to interpret the results. We find the holes act as point-like sources of SPPs and demonstrate that the interference between the SPP and a directly transmitted wave allows determination of the wavelength, phase, and decay length of the SPP. The near-field intensity patterns can be manipulated by varying the angle and polarization of the incident beam. (C) 2004 American Institute of Physics.

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收藏

页码：467 / 469

页数：3

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