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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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Meta-Optical Chirality and Emergent Eigen-polarization Modes via Plasmon Interactions
Matthew Moocarme1,2, Nicholas V Proscia1,2, Luat T Vuong1,2
1The Graduate Center of CUNY, 365 5th Ave, New York, NY, 10016, USA.
Scientific Reports
|February 9, 2017
Summary
This study reveals that interactions between meta-atoms, not individual responses, create optical chirality in metasurfaces. Understanding these interactions is key for designing advanced optical devices.
Area of Science:
- Plasmonics
- Metasurfaces
- Optical Chirality
Background:
- Metasurface collective response is often simplified by ignoring inter-meta-atom interactions.
- Existing models fail to fully explain polarization-dependent optical phenomena in certain metasurfaces.
Purpose of the Study:
- To investigate how asymmetric inter-meta-atom interactions generate optical chirality in metasurfaces.
- To develop a model that accurately predicts metasurface behavior, including polarization-dependent responses.
Main Methods:
- Studied a metasurface of tilted achiral meta-atoms with no unit cell spatial variation.
- Incorporated Lorentz force from Larmor radiation of adjacent plasmonic resonators to model inter-meta-atom interactions.
- Experimental observation of polarization-dependent responses and eigenmodes.
Main Results:
- Asymmetric interactions between meta-atoms are the primary source of optical chirality.
- A model including inter-meta-atom interactions accurately predicts bonding/anti-bonding modes.
- Observed multiple polarization eigenmodes, unexplainable by conventional transmission matrix methods.
Conclusions:
- Interactions between meta-atoms are crucial for understanding metasurface optical chirality.
- The developed model provides accurate predictions for metasurface behavior.
- Findings are essential for precise metasurface characterization and design.
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