Emission induced by strong coupling between hybrid Tamm-surface plasmon polariton mode and rhodamine 6G dye exciton

Abstract

otal internal reflection ellipsometry (TIRE) and leakage microscopy were applied for the study of photonic-plasmonic nanostructures supporting hybrid Tamm–surface plasmon modes and their strong coupling with Rhodamine 6G organic dye excitons. The optical response of TIRE has shown that Tamm and surface plasmon polaritons interact strongly and the formed hybrid plasmonic mode alters resonances in the energy spectra. Moreover, both TPP (Tamm plasmon polaritons) and SPP (surface plasmon polaritons) components in the hybrid mode are strongly coupled with R6G-PMMA (poly(methyl methacrylate)) layers at the inner and outer interfaces of the 50 nm gold layer, respectively. Leakage microscopy in the back focal plane optical configuration proves the energy transfer of excited emitters through the 50 nm gold layer in the strong coupling regime. Polaritonic emission in the strong coupling has better coherence properties than conventional spontaneous fluorescence emission from pure Rhodamine 6G organic dye molecules.