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Strongly Directional Scattering from Dielectric Nanowires

Published on 29 March 2018
Strongly Directional Scattering from Dielectric Nanowires
Wiecha P.R., Cuche A., Arbouet A., Girard C., Colas Des Francs G., Lecestre A., Larrieu G., Fournel F., Larrey V., Baron T., Paillard V.
Source-TitleACS Photonics
CEMES-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France, ICB, UMR 6303 CNRS, Université Bourgogne-Franche Comté, Dijon, France, LAAS-CNRS, Université de Toulouse, CNRS, INP, Toulouse, France, Université Grenoble Alpes, Grenoble, France, CEA, LETI, MINATEC Campus, Grenoble, France, Université Grenoble Alpes, CNRS, CEA-Leti Minatec, LTM, Grenoble, France
It has been experimentally demonstrated only recently that a simultaneous excitation of interfering electric and magnetic resonances can lead to unidirectional scattering of visible light in zero-dimensional dielectric nanoparticles. We show both theoretically and experimentally, that strongly anisotropic scattering also occurs in individual dielectric nanowires. The effect occurs even under either pure transverse electric or pure transverse magnetic polarized normal illumination. This allows for instance to toggle the scattering direction by a simple rotation of the incident polarization. Finally, we demonstrate that directional scattering is not limited to cylindrical cross sections but can be further tailored by varying the shape of the nanowires. © 2017 American Chemical Society.
directional light scattering, high-index dielectric nanoparticles, Kerker's condition, Mie resonances, nanowires, silicon photonics
Dielectric materials, Light, Light scattering, Magnetic resonance, Nanomagnetics, Nanoparticles, Nanowires, Photonics, Anisotropic scattering, Cylindrical cross section, Dielectric nanoparticles, Dielectric nanowires, Incident polarization, Kerker's condition, Mie resonance, Silicon photonics, Electric excitation

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