Related Experiment Video
Updated: Aug 22, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Strong coupling between surface plasmons and excitons in an organic semiconductor
J Bellessa1, C Bonnand, J C Plenet
1Laboratoire de Physique de la Matière condensée et Nanostructures, CNRS UMR 5586, Univ. Lyon-1, Villeurbanne 69622, France. bellessa@lpmcn.univ-lyon.fr
Abstract:
We report on the observation of a strong coupling between a surface plasmon and an exciton. Reflectometry experiments are performed on an organic semiconductor, namely, cyanide dye J aggregates, deposited on a silver film. The dispersion lines present an anticrossing that is the signature of a strong plasmon-exciton coupling. Mixed states are formed in a similar way as microcavities polaritons. The Rabi splitting characteristic of this coupling reaches 180 meV at room temperature. The emission of the low energy plasmon-exciton mixed state has been observed and is largely shifted from the uncoupled emission.
More Related Videos
Related Concept Videos
¹H NMR: Long-Range Coupling
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene π orbitals.
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent of conjugation in the...
Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals
Types of Semiconductors
π Electron Effects on Chemical Shift: Overview
Debye–Huckel–Onsager Conductance Equation

