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Nanoscale Res Lett. 2012 Mar 19;7:191. doi: 10.1186/1556-276X-7-191.

Strong coupling between surface plasmon polaritons and Sulforhodamine 101 dye.

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  • 1Nanoscience Center, Department of Physics, P,O, Box 35, FI-40014, University of Jyväskylä, Finland. svitlana.v.baieva@jyu.fi.

Abstract

We demonstrate a strong coupling between surface plasmon polaritons and Sulforhodamine 101 dye molecules. Dispersion curves for surface plasmon polaritons on samples with a thin layer of silver covered with Sulforhodamine 101 molecules embedded in SU-8 polymer are obtained experimentally by reflectometry measurements and compared to the dispersion of samples without molecules. Clear Rabi splittings, with energies up to 360 and 190 meV, are observed at the positions of the dye absorption maxima. The split energies are dependent on the number of Sulforhodamine 101 molecules involved in the coupling process. Transfer matrix and coupled oscillator methods are used to model the studied multilayer structures with a great agreement with the experiments. Detection of the scattered radiation after the propagation provides another way to obtain the dispersion relation of the surface plasmon polaritons and, thus, provides insight into dynamics of the surface plasmon polariton/dye interaction, beyond the refrectometry measurements.PACS: 42.50.Hz, 33.80.-b, 78.67.-n.

PMID:
22429311
[PubMed]
PMCID:
PMC3362758
Free PMC Article
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