Strong coupling between localized and propagating plasmon polaritons

被引：36

作者：

Balci, Sinan ^{[1
]}

Karademir, Ertugrul ^{[2
]}

Kocabas, Coskun ^{[2
]}

机构：

[1] Univ Turkish Aeronaut Assoc, Dept Astronaut Engn, TR-06790 Ankara, Turkey

[2] Bilkent Univ, Dept Phys, TR-06800 Ankara, Turkey

来源：

OPTICS LETTERS | 2015年 / 40卷 / 13期

关键词：

SURFACE-PLASMON; NANOPARTICLE; RESONANCES; MODES; FILM; HYBRIDIZATION; ENHANCEMENT; DISPERSION; NANOPRISMS;

D O I：

10.1364/OL.40.003177

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate plasmon-plasmon (PP) coupling in the strongly interacting regimes by using a tunable plasmonic platform consisting of triangular Ag nanoprisms placed nanometers away from Ag thin films. The nanoprisms are colloidally synthesized using a seed-mediated growth method and having size-tunable localized surface plasmon polariton (SPP) resonances immobilized on Si3N4 films. The PP coupling between the localized SPPs of metal nanoprisms and the propagating SPPs of the metal film is controlled by the nanoprism concentration and the plasmon damping in the metal film. Results reveal that Rabi splitting energy determining the strength of the coupling can reach up to several hundreds meV, thus demonstrating the ultra-strong coupling occurring between localized and propagating SPPs. The metal nanoparticle-metal thin film hybrid system over the square-centimeter areas presented here provides a unique configuration to study PP coupling all the way from the weak to ultrastrong coupling regimes in a broad range of wavelengths. (C) 2015 Optical Society of America

引用

页码：3177 / 3180

页数：4

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