We present measurement and simulation results of local surface plasmon resonances on silver nanoantenna
structures, fabricated with electron beam lithography. Such structures offer interesting possibilities to study
strong coupling phenomena between surface plasmon polaritons (SPP) and, e.g., quantum dots, along the lines
of our previous work on vacuum Rabi splitting for SPP and dye molecules.
We report on strong coupling between surface plasmon polaritons and Rhodamine 6G molecules at room temperature.
As a reference to compare with, we first determine the dispersion curve of (uncoupled) surface plasmon
polaritons on a 50 nm thick film of silver. Consequently, we determine the dispersion curve of surface plasmon
polaritons strongly coupled to Rhodamine 6G molecules, which exhibits vacuum Rabi splitting. Furthermore,
we present spontaneous emission spectra of Rhodamine 6G on silver, which are shown to change with detector angle due to surface plasmon polariton generation by Rhodamine 6G molecules.
We report on strong coupling between surface-plasmon polaritons and Rhodamine 6G molecules at room temperature.
As a reference to compare with, we first determine the dispersion curve of (uncoupled) surface plasmon
polaritons on a 50 nm thick film of silver. Consequently, we determine the dispersion curve of surface plasmon
polaritons strongly coupled to Rhodamine 6G molecules, which exhibits vacuum Rabi splitting. Depending on
the Rhodamine 6G concentration, we find splitting energies between 0.05 eV and 0.13 eV.
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