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Engineering collective excitations such as plasmons and polaritons provides access to exotic optical properties. This study reports semiconductor nanostructures with coupled surface modes that interact with multiple resonant dipoles, yielding double and triple polariton branches in the system's response. This produces useful and tunable properties with the flexibility to enable low-voltage tunable filters, light-emitting diodes, and efficient nonlinear composite materials.
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Campione et al. (2015) studied this question.
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