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Chiroptical response of a single plasmonic nanohelix

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arxiv 1804.05641 v1 pith:KDPET537 submitted 2018-04-16 physics.optics

Chiroptical response of a single plasmonic nanohelix

Pawe{\l} Wo\'zniak , Israel De Leon , Katja H\"oflich , Caspar Haverkamp , Silke Christiansen , Gerd Leuchs , Peter Banzer This is my paper
classification physics.optics
keywords nanohelixchiralchiropticalexperimentallyplasmonicresonanceresponsesingle
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We investigate the chiroptical response of a single plasmonic nanohelix interacting with a weakly-focused circularly-polarized Gaussian beam. The optical scattering at the fundamental resonance is characterized experimentally, and the chiral behavior of the nanohelix is explained based on a multipole analysis. The angularly resolved emission of the excited nanohelix is verified experimentally and it validates the theoretical results. Further, we study the first higher-order resonance and explain the formation of chiral dipoles in both cases.

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