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Updated: May 21, 2026
07:39
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Decay rates modification through coupling of degenerate surface plasmon modes
1Department of Physics, The Chinese University of Hong Kong, Shatin, China.
Optics Letters
|June 30, 2012
Summary
We measured plasmon mode decay rates in gold nanohole arrays, finding that hole size controls these rates and creates dark and bright modes. This offers a way to tune plasmonic properties for various applications.
Area of Science:
- Plasmonics
- Nanophotonics
- Materials Science
Background:
- Surface plasmon modes are crucial for nanoscale light manipulation.
- Controlling plasmon decay rates is essential for optimizing plasmonic devices.
- Gold nanohole arrays offer a platform for studying plasmon coupling phenomena.
Purpose of the Study:
- To investigate the relationship between nanohole size and plasmon mode decay rates.
- To understand the formation of dark and bright plasmon modes through resonant coupling.
- To explore methods for controlling plasmon decay rates in nanohole arrays.
Main Methods:
- Angle-resolved reflectivity spectroscopy was used to measure decay rates.
- Experiments were conducted on gold nanohole arrays with varying hole diameters.
- Temporal coupled mode theory was employed to analyze the observed phenomena.
Main Results:
- Significant modification of decay rates was observed in the resonant coupling region.
- The formation of distinct dark and bright plasmon modes was confirmed.
- The coupling constant was found to increase with increasing nanohole diameter.
Conclusions:
- Nanohole size is an effective parameter for controlling plasmon mode decay rates.
- The study demonstrates a method for tuning dark and bright modes in plasmonic systems.
- The findings are valuable for the development of advanced plasmonic applications.
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