Near-field-induced tunability of surface plasmon polaritons in composite metallic nanostructures

被引：41

作者：

Christ, A. ^{[1
]}

Leveque, G. ^{[1
]}

Martin, O. J. F. ^{[1
]}

Zentgraf, T. ^{[2
]}

Kuhl, J. ^{[2
]}

Bauer, C. ^{[3
]}

Giessen, H. ^{[3
]}

Tikhodeev, S. G. ^{[4
]}

机构：

[1] EPFL STI NAM, Swiss Fed Inst Technol, Nanophoton & Meterol Lab, ELG Stn 11, CH-1015 Lausanne, Switzerland

[2] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[3] Univ Stuttgart, Inst Phys 4, D-70569 Stuttgart, Germany

[4] Russian Acad Sci, AM Prokhorov Gen Phys Inst, Moscow 119991, Russia

来源：

JOURNAL OF MICROSCOPY | 2008年 / 229卷 / 02期

关键词：

interaction; magnetic activity; near-fields; surface plasmon polaritons;

D O I：

10.1111/j.1365-2818.2008.01911.x

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

We numerically study near-field-induced coupling effects in metal nanowire-based composite nanostructures. Our multi-layer system is composed of individual gold nanowires supporting localized particle plasmons at optical wavelengths, and a spatially separated homogeneous silver slab supporting delocalized surface plasmons. We show that the localized plasmon modes of the composite structure, forming so-called magnetic atoms, can be controlled over a large spectral range by changing the thickness of the nearby metal slab. The optical response of single-wire and array-based metallic structures are compared. Spectral shifts due to wire-mirror interaction as well as the coupling between localized and delocalized surface plasmon modes in a magnetic photonic crystal are demonstrated. The presented effects are important for the optimization of metal-based nanodevices and may lead to the realization of metamaterials with novel plasmonic functionalities.

引用

页码：344 / 353

页数：10

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