Excitation of multiple trapped-eigenmodes in terahertz metamolecule lattices

We report on the excitation of sharp Fano-like resonances in lattices of metamolecules composed of two differing types of metaatoms. The proposed structures exhibit modes originating from the individual metaatoms as well as a very sharp mode from the collective excitation of the metamolecule lattice...

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Veröffentlicht in:Applied physics letters 2014-03, Vol.104 (10)
Hauptverfasser: Born, N., Al-Naib, I., Jansen, C., Ozaki, T., Morandotti, R., Koch, M.
Format: Artikel
Sprache:eng
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Zusammenfassung:We report on the excitation of sharp Fano-like resonances in lattices of metamolecules composed of two differing types of metaatoms. The proposed structures exhibit modes originating from the individual metaatoms as well as a very sharp mode from the collective excitation of the metamolecule lattice as a whole. Next-generation thin film sensors (e.g., for bio/chemical hazard detectors) could especially benefit from such artificial materials. Having multiple modes at different spectral positions enables the characterization of dispersive materials, while the high Q-factors of the eigenmodes lead to a very high sensitivity.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4868420