Related Experiment Video
Updated: Jul 15, 2025
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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
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Plasmonic Coupled Modes in a Metal-Dielectric Periodic Nanostructure
Victor Coello1, Mas-Ud A Abdulkareem2, Cesar E Garcia-Ortiz3
1Centro de Investigación Científica y de Educación Superior de Ensenada, Unidad Monterrey, Alianza Centro 504, PIIT, Apodaca 66629, Mexico.
Micromachines
|September 28, 2023
Summary
This study presents a novel 2D-gap surface plasmon metasurface with tunable near-infrared optical properties. The gold nanoblock structure generates simultaneous multi-plasmonic resonances via Fano-type hybridization, promising for optical applications.
Area of Science:
- Plasmonics
- Metasurfaces
- Nanophotonics
Background:
- Surface plasmon resonances are crucial for manipulating light at the nanoscale.
- Metasurfaces offer advanced control over optical properties through engineered nanostructures.
Purpose of the Study:
- To investigate the optical properties of a 2D-gap surface plasmon metasurface composed of gold nanoblocks.
- To explore the tunability and resonance mechanisms within the near-infrared spectrum.
Main Methods:
- Finite difference time domain (FDTD) simulations were employed.
- Analysis of reflectance spectra for varying lattice periods and dielectric gap thicknesses.
Main Results:
- Identified two distinct dips in reflectance spectra, indicating resonant modes.
- Observed Fano-type hybridization between localized surface plasmons (LSPs) and surface plasmon polaritons (SPPs).
- Demonstrated tunability of resonance wavelengths with dielectric gap thickness and lattice periodicity.
Conclusions:
- The designed metasurface exhibits simultaneous multi-plasmonic resonances and tunability.
- The structure shows potential for compact optical platforms and applications like multi-channel biosensors and spectroscopy.
