Approaching the strong coupling limit in single plasmonic nanorods interacting with J-aggregates
Artikel i vetenskaplig tidskrift, 2013

We studied scattering and extinction of individual silver nanorods coupled to the J-aggregate form of the cyanine dye TDBC as a function of plasmon - exciton detuning. The measured single particle spectra exhibited a strongly suppressed scattering and extinction rate at wavelengths corresponding to the J-aggregate absorption band, signaling strong interaction between the localized surface plasmon of the metal core and the exciton of the surrounding molecular shell. In the context of strong coupling theory, the observed "transparency dips" correspond to an average vacuum Rabi splitting of the order of 100 meV, which approaches the plasmon dephasing rate and, thereby, the strong coupling limit for the smallest investigated particles. These findings could pave the way towards ultra-strong light-matter interaction on the nanoscale and active plasmonic devices operating at room temperature.

SYSTEM

TRANSISTOR

EXCITONS

NANOPARTICLES

ENERGY-TRANSFER

COMPLEXES

QUANTUM-DOT

DYE

DYNAMICS

LIGHT

Författare

Gülis Zengin

Chalmers, Teknisk fysik, Bionanofotonik

Göran Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Peter Johansson

Chalmers, Teknisk fysik, Bionanofotonik

Tomasz Antosiewicz

Chalmers, Teknisk fysik, Bionanofotonik

Mikael Käll

Chalmers, Teknisk fysik, Bionanofotonik

Timur Shegai

Chalmers, Teknisk fysik, Bionanofotonik

Scientific Reports

2045-2322 (ISSN)

Vol. 3 3074

Ämneskategorier

Fysik

DOI

10.1038/srep03074

Mer information

Skapat

2017-10-08