Near-field probing of Mie resonances in single TiO2 microspheres at terahertz frequencies

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00440831" target="_blank" >RIV/68378271:_____/14:00440831 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1364/OE.22.023034" target="_blank" >http://dx.doi.org/10.1364/OE.22.023034</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/OE.22.023034" target="_blank" >10.1364/OE.22.023034</a>

Result language
angličtina
Original language name
Near-field probing of Mie resonances in single TiO2 microspheres at terahertz frequencies
Original language description
We show experimentally that polycrystalline TiO2 spheres, 20-30 micrometers in diameter, exhibit a magnetic dipole Mie resonance in the THz frequency band with a narrow linewidth. We detect and investigate the magnetic dipole and electric dipole resonances in single high-permittivity TiO2 microspheres, using a near-field probe with a sub-wavelength size aperture and THz time-domain spectroscopy technique. The Mie resonance signatures are observed in the electric field amplitude and phase spectra, as well as in the electric field distribution near the microspheres. The narrow linewidth and the sub-wavelength size make the TiO2 microspheres excellent candidates for realizing low-loss THz metamaterials.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Project
<a href="/en/project/GA14-25639S" target="_blank" >GA14-25639S: Tuning of terahertz response of dielectric materials and metamaterial structures</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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