KHROMOVA, Irina; KUŽEL, Petr; BRENER, Igal; RENO, John L.; CHUNG SEU, U-Chan; ELISSALDE, Catherine; MAGLIONE, Mario; MOUNAIX, Patrick; MITROFANOV, Oleg

doi:10.1002/lpor.201600084

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KHROMOVA, Irina
King‘s College London
ITMO University [Russia]
University College of London [London] [UCL]

KUŽEL, Petr
Institute of Physics [Prague]

BRENER, Igal
Center for Integrated Nanotechnologies
Sandia National Laboratories [Albuquerque] [SNL]

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Article de revue

Ce document a été publié dans

Laser and Photonics Reviews. 2016, vol. 10, n° 4, p. 681-687

Wiley-VCH Verlag

Résumé en anglais

Monocrystalline titanium dioxide (TiO2) micro-spheres support two orthogonal magnetic dipole modes at terahertz (THz) frequencies due to strong dielectric anisotropy. For the first time, we experimentally detected the splitting of the first Mie mode in spheres of radii inline imagem through near-field time-domain THz spectroscopy. By fitting the Fano lineshape model to the experimentally obtained spectra of the electric field detected by the sub-wavelength aperture probe, we found that the magnetic dipole resonances in TiO2 spheres have narrow linewidths of only tens of gigahertz. Anisotropic TiO2 micro-resonators can be used to enhance the interplay of magnetic and electric dipole resonances in the emerging THz all-dielectric metamaterial technology.< Réduire

DOI

http://dx.doi.org/10.1002/lpor.201600084

Project ANR

Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026