Influence of the tip in near-field imaging of nanoparticle plasmonic modes: Weak and strong coupling regimes

被引：109

作者：

Garcia-Etxarri, Aitzol ^{[1
,2
]}

Romero, Isabel ^{[2
]}

Javier Garcia de Abajo, F. ^{[3
]}

Hillenbrand, Rainer ^{[4
]}

Aizpurua, Javier ^{[1
,2
]}

机构：

[1] CSIC UPV EHU, Ctr Fis Mat, Donostia San Sebastin 20018, Spain

[2] DIPC, Donostia San Sebastian 20018, Spain

[3] CSIC, Inst Opt, E-28006 Madrid, Spain

[4] CIC NanoGUNE Consolider, Donostia San Sebastin 20009, Spain

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 12期

关键词：

gold; nanoparticles; near-field scanning optical microscopy; plasmons; SURFACE-PLASMONS; SPECTROSCOPY; PHASE; LIMIT;

D O I：

10.1103/PhysRevB.79.125439

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We identify weak and strong coupling regimes between a near-field probing tip and a plasmonic sample by imaging plasmon-resonant gold nanodisks with scattering-type scanning near-field optical microscopy (s-SNOM). By means of rigorous electrodynamical calculations based on a model system, we find that in the weak coupling regime, s-SNOM can be applied for direct mapping of plasmonic nanoantenna modes, while in the strong coupling regime, the near-field probe allows for high-precision opto-mechanical control of the antenna response.

引用

页数：5

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