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Updated: Mar 31, 2026
07:39
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
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Generalized analytical model based on harmonic coupling for hybrid plasmonic modes: comparison with numerical and
Optics Express
|October 20, 2015
Summary
We developed an analytical model for metallic nanocylinder arrays on thin films, explaining localized surface plasmon (LSP) and hybrid lattice plasmon (HLP) modes. This model aids in optimizing plasmonic nanostructures for various applications.
Area of Science:
- Plasmonics and Nanophotonics
- Condensed Matter Physics
- Materials Science
Background:
- Metal nanoparticle arrays enhance electromagnetic fields via plasmonic modes.
- Understanding these modes is crucial for applications leveraging field enhancement.
Purpose of the Study:
- To propose a simple analytical model for plasmonic modes in metallic nanocylinder arrays on thin films.
- To explain the coupling between localized surface plasmon (LSP) and propagating surface plasmon (PSP) modes, forming hybrid lattice plasmon (HLP) modes.
- To investigate Bragg modes (BM) arising from array periodicity.
Main Methods:
- Development of a simple analytical model.
- Analytical calculation of resonance frequencies for BM, LSP, and HLP modes.
- Verification using rigorous numerical methods and experimental results (Kretschmann configuration).
Main Results:
- The analytical model successfully explains the excitation of LSP, HLP, and BM modes.
- Calculated resonance frequencies for these modes were validated numerically and experimentally.
- The study demonstrates the dependency of resonance frequencies on structural parameters (cylinder diameter, height, array periodicity).
Conclusions:
- The proposed analytical model provides insights into the physics governing plasmonic mode excitation in nanocylinder arrays.
- The findings facilitate the optimization of such nanostructures for diverse applications requiring tailored electromagnetic field enhancement.
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