Optimization of a nanotip on a surface for the ultrafast probing of propagating surface plasmons

被引：8

作者：

Ahn, B. ^{[1
,2
,3
]}

Schoetz, J. ^{[3
]}

Okell, W. A. ^{[3
]}

Suessmann, F. ^{[3
,4
]}

Foerg, B. ^{[3
,4
]}

Kim, S. C. ^{[1
,2
]}

Kling, M. F. ^{[3
,4
]}

Kim, D. ^{[1
,2
]}

机构：

[1] Pohang Univ Sci & Technol, Ctr Attosecond Sci & Technol, Dept Phys, Pohang 37673, South Korea

[2] KOREA Res Inst, Max Planck POSTECH, Max Planck Ctr Attosecond Sci, Pohang 37673, South Korea

[3] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[4] Univ Munich, Dept Phys, D-85748 Garching, Germany

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

SINGLE MOLECULES; FEW-CYCLE; FIELD; NANOSTRUCTURES; NANOPARTICLES; FABRICATION; EMISSION; ARRAY; PHOTOEMISSION; ELECTRONS;

D O I：

10.1364/OE.24.000092

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We theoretically analyze a method for characterizing propagating surface plasmon polaritons (SPPs) on a thin gold film. The SPPs are excited by few-cycle near-infrared pulses using Kretschmann coupling, and a nanotip is used as a local field sensor. This geometry removes the influence of the incident excitation laser from the near fields, and enhances the plasmon electric field strength. Using finite-difference-time-domain studies we show that the geometry can be used to measure SPP waveforms as a function of propagation distance. The effects of the nanotip shape and material on the field enhancement and plasmonic response are discussed. (C) 2016 Optical Society of America

引用

页码：92 / 101

页数：10

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