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Updated: Jun 17, 2026
07:39
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Lattice modes mediate radiative coupling in metamaterial arrays
Andreas Bitzer1, Jan Wallauer, Hanspeter Helm
1Freiburg Materials Research Center, University of Freiburg, Freiburg, Germany. andreas.bitzer@gmail.com
Optics Express
|December 10, 2009
Summary
We achieved high-quality resonant responses in metamaterials by radiatively coupling structural elements via lattice modes. Tuning lattice periodicity controls this coupling, enabling precise manipulation of plasmonic and diffractive modes.
Area of Science:
- Metamaterials science
- Plasmonics
- Nanophotonics
Background:
- Periodic metamaterials offer unique electromagnetic properties.
- Controlling resonant responses in metamaterials is crucial for device applications.
- Radiative coupling is a key mechanism for energy transfer in nanostructures.
Purpose of the Study:
- To demonstrate high-quality factor resonant responses in periodic metamaterials.
- To investigate the role of radiative coupling mediated by lattice modes.
- To explore the control of resonant responses via lattice periodicity.
Main Methods:
- Utilized terahertz (THz) near-field imaging.
- Employed conventional far-field spectroscopy.
- Performed numerical simulations to identify underlying mechanisms.
Main Results:
- Achieved resonant responses with very high quality factors.
- Demonstrated efficient control of coupling by tuning lattice periodicity.
- Identified avoided crossings between plasmonic eigenmodes and diffractive lattice modes in strong coupling regimes.
Conclusions:
- Radiative coupling via lattice modes enables high-quality resonant responses in metamaterials.
- Lattice periodicity is a critical parameter for controlling metamaterial resonances.
- Understanding strong coupling regimes reveals fundamental interactions between plasmonic and diffractive modes.
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