The following article is Open access

Particularities of surface plasmon–exciton strong coupling with large Rabi splitting

, , , , , , and

Published 30 June 2008 Published under licence by IOP Publishing Ltd
, , Focus on Molecular Electronics Citation C Symonds et al 2008 New J. Phys. 10 065017 DOI 10.1088/1367-2630/10/6/065017

1367-2630/10/6/065017

Abstract

This paper presents some of the particularities of the strong coupling regime occurring between surface plasmon (SP) modes and excitons. Two different active materials were deposited on a silver film: a cyanine dye J-aggregate, and a two-dimensional layered perovskite-type semiconductor. The dispersion relations, which are deduced from angular resolved reflectometry spectra, present an anticrossing characteristic of the strong coupling regime. The wavevector is a good parameter to determine the Rabi splitting. Due to the large interaction energies (several hundreds of milli-electron-volts), the calculations at constant angle can induce an overestimation of the Rabi splitting of more than a factor of two. Another property of polaritons based on SP is their nonradiative character. In order to observe the polaritonic emission, it is thus necessary to use particular extraction setups, such as gratings or prisms. Otherwise only the incoherent emission can be detected, very similar to the bare exciton emission.

Export citation and abstract BibTeX RIS

Please wait… references are loading.