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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Strong coupling between surface plasmon polaritons and Sulforhodamine 101 dye
Svitlana V Baieva1, Tommi K Hakala, Jussi J Toppari
1Nanoscience Center, Department of Physics, P,O, Box 35, FI-40014, University of Jyväskylä, Finland. svitlana.v.baieva@jyu.fi.
Nanoscale Research Letters
|March 21, 2012
Summary
We observed strong coupling between surface plasmon polaritons and Sulforhodamine 101 dye molecules, leading to distinct Rabi splittings. This interaction
Area of Science:
- Plasmonics
- Quantum Optics
- Spectroscopy
Background:
- Surface plasmon polaritons (SPPs) are light-driven electron oscillations on metal surfaces.
- Strong light-matter interactions are crucial for novel optical devices.
- Sulforhodamine 101 is a fluorescent dye with specific absorption properties.
Purpose of the Study:
- To investigate the coupling between SPPs and Sulforhodamine 101 dye molecules.
- To characterize the resulting Rabi splittings and their dependence on molecular concentration.
- To explore alternative methods for studying SPP-dye interactions.
Main Methods:
- Experimental measurement of dispersion curves using reflectometry.
- Fabrication of multilayer structures with silver and SU-8 polymer containing the dye.
- Theoretical modeling using transfer matrix and coupled oscillator methods.
- Analysis of scattered radiation to probe SPP dynamics.
Main Results:
- Demonstration of strong coupling between SPPs and Sulforhodamine 101.
- Observation of clear Rabi splittings up to 360 and 190 meV at dye absorption maxima.
- Rabi splitting energy found to be dependent on the number of dye molecules involved.
- Excellent agreement between experimental data and theoretical models.
Conclusions:
- Strong coupling and Rabi splittings confirm significant light-matter interaction.
- The observed phenomena are tunable by controlling the molecular concentration.
- Scattered radiation analysis offers complementary insights into SPP-dye dynamics.
