Splitting of magnetic dipole modes in anisotropic TiO 2 micro-spheres: Splitting of magnetic dipole modes in anisotropic TiO 2 micro-spheres
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 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. Lastly, 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.
- Authors:
-
- King's College London, London (United Kingdom); UCL, London (United Kingdom); ITMO University, St. Petersburg (Russia)
- Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Inst. of Physics
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Univ. of Bordeaux, Pessac (France)
- UCL, London (United Kingdom); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1259675
- Report Number(s):
- SAND-2016-3103J
Journal ID: ISSN 1863-8880; 637692
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Laser & Photonics Reviews
- Additional Journal Information:
- Journal Name: Laser & Photonics Reviews; Journal ID: ISSN 1863-8880
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Terahertz spectroscopy; Mie scattering; dielectric metamaterials; magnetic dipole
Citation Formats
Khromova, Irina, Kužel, Petr, Brener, Igal, Reno, John L., Chung Seu, U-Chan, Elissalde, Catherine, Maglione, Mario, Mounaix, Patrick, and Mitrofanov, Oleg. Splitting of magnetic dipole modes in anisotropic TiO 2 micro-spheres: Splitting of magnetic dipole modes in anisotropic TiO 2 micro-spheres. United States: N. p., 2016.
Web. doi:10.1002/lpor.201600084.
Khromova, Irina, Kužel, Petr, Brener, Igal, Reno, John L., Chung Seu, U-Chan, Elissalde, Catherine, Maglione, Mario, Mounaix, Patrick, & Mitrofanov, Oleg. Splitting of magnetic dipole modes in anisotropic TiO 2 micro-spheres: Splitting of magnetic dipole modes in anisotropic TiO 2 micro-spheres. United States. https://doi.org/10.1002/lpor.201600084
Khromova, Irina, Kužel, Petr, Brener, Igal, Reno, John L., Chung Seu, U-Chan, Elissalde, Catherine, Maglione, Mario, Mounaix, Patrick, and Mitrofanov, Oleg. Mon .
"Splitting of magnetic dipole modes in anisotropic TiO 2 micro-spheres: Splitting of magnetic dipole modes in anisotropic TiO 2 micro-spheres". United States. https://doi.org/10.1002/lpor.201600084. https://www.osti.gov/servlets/purl/1259675.
@article{osti_1259675,
title = {Splitting of magnetic dipole modes in anisotropic TiO 2 micro-spheres: Splitting of magnetic dipole modes in anisotropic TiO 2 micro-spheres},
author = {Khromova, Irina and Kužel, Petr and Brener, Igal and Reno, John L. and Chung Seu, U-Chan and Elissalde, Catherine and Maglione, Mario and Mounaix, Patrick and Mitrofanov, Oleg},
abstractNote = {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. Lastly, 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.},
doi = {10.1002/lpor.201600084},
journal = {Laser & Photonics Reviews},
number = ,
volume = ,
place = {United States},
year = {Mon Jun 27 00:00:00 EDT 2016},
month = {Mon Jun 27 00:00:00 EDT 2016}
}
Web of Science
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Works referencing / citing this record:
Efficient visible light modulation based on electrically tunable all dielectric metasurfaces embedded in thin-layer nematic liquid crystals
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