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Chiroptical response of a single plasmonic nanohelix

MPS-Authors
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Wozniak,  Pawel
Interference Microscopy and Nanooptics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Haverkamp,  Caspar
Christiansen Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Christiansen,  Silke
Christiansen Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs,  Gerd
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Banzer,  Peter
Interference Microscopy and Nanooptics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Wozniak, P., De Leon, I., Hoeflich, K., Haverkamp, C., Christiansen, S., Leuchs, G., et al. (2018). Chiroptical response of a single plasmonic nanohelix. OPTICS EXPRESS, 26(15), 19275-19293. doi:10.1364/OE.26.019275.


Cite as: http://hdl.handle.net/21.11116/0000-0002-09C0-B
Abstract
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. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement