Chiroptical response of a single plasmonic nanohelix

Chiroptical response of a single plasmonic nanohelix

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 numerically. The angularly resolved scattering of the excited nanoheli...

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Veröffentlicht in:Optics express 2018-07, Vol.26 (15), p.19275-19293
Hauptverfasser: Woźniak, Paweł, De Leon, Israel, Höflich, Katja, Haverkamp, Caspar, Christiansen, Silke, Leuchs, Gerd, Banzer, Peter
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container_end_page 19293
container_issue 15
container_start_page 19275
container_title Optics express
container_volume 26
creator Woźniak, Paweł
De Leon, Israel
Höflich, Katja
Haverkamp, Caspar
Christiansen, Silke
Leuchs, Gerd
Banzer, Peter
description 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 numerically. The angularly resolved scattering of the excited nanohelix is verified experimentally and it validates the numerical results. We employ a multipole decomposition analysis to study the fundamental and first higher-order resonance of the nanohelix, explaining their chiral properties in terms of the formation of chiral dipoles.
doi_str_mv 10.1364/OE.26.019275
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title Chiroptical response of a single plasmonic nanohelix
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