Quasinormal Mode Analysis of Polygon-on-Mirror Geometries
2021
Plasmonic nanoantennas offer intense confinement of light, to volumes even below the diffraction limit. Routine scattering analysis offers limited information on near-field intricacies. Therefore, we adopt a quasinormal mode approach to reveal the strong facet morphology dependence of rhombicuboctahedron-on-mirror near-field charge distributions, as well as far-field out-coupling. Thus allows for structural identification from far-field measurements.
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