Splitting of magnetic dipole modes in anisotropic TiO2 micro-spheres
KHROMOVA, Irina
King‘s College London
ITMO University [Russia]
University College of London [London] [UCL]
King‘s College London
ITMO University [Russia]
University College of London [London] [UCL]
BRENER, Igal
Center for Integrated Nanotechnologies
Sandia National Laboratories [Albuquerque] [SNL]
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Center for Integrated Nanotechnologies
Sandia National Laboratories [Albuquerque] [SNL]
KHROMOVA, Irina
King‘s College London
ITMO University [Russia]
University College of London [London] [UCL]
King‘s College London
ITMO University [Russia]
University College of London [London] [UCL]
BRENER, Igal
Center for Integrated Nanotechnologies
Sandia National Laboratories [Albuquerque] [SNL]
Center for Integrated Nanotechnologies
Sandia National Laboratories [Albuquerque] [SNL]
RENO, John L.
Center for Integrated Nanotechnologies
Sandia National Laboratories [Albuquerque] [SNL]
< Reduce
Center for Integrated Nanotechnologies
Sandia National Laboratories [Albuquerque] [SNL]
Language
en
Article de revue
This item was published in
Laser and Photonics Reviews. 2016, vol. 10, n° 4, p. 681-687
Wiley-VCH Verlag
English Abstract
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 ...Read more >
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.Read less <
ANR Project
Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
Origin
Hal imported