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Polarization control over electric and magnetic dipole resonances of dielectric nanoparticles on metallic films
Author(s) -
Sinev Ivan,
Iorsh Ivan,
Bogdanov Andrey,
Permyakov Dmitry,
Komissarenko Filipp,
Mukhin Ivan,
Samusev Anton,
Valuckas Vytautas,
Kuznetsov Arseniy I.,
Luk'yanchuk Boris S.,
Miroshnichenko Andrey E.,
Kivshar Yuri S.
Publication year - 2016
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201600055
Subject(s) - dielectric , dipole , materials science , polarization (electrochemistry) , scattering , polarization density , electric field , magnetic dipole , nanoparticle , condensed matter physics , spectroscopy , optics , magnetic field , optoelectronics , physics , magnetization , nanotechnology , chemistry , quantum mechanics
We reveal unusually strong polarization sensitivity of electric and magnetic dipole resonances of high‐index dielectric nanoparticles placed on a metallic film. By employing dark‐field spectroscopy, we observe the polarization‐controlled transformation from high‐Q magnetic‐dipole scattering to broadband suppression of scattering associated with the electric dipole mode, and show numerically that it is accompanied by a strong enhancement of the respective fields by the nanoparticle. Our experimental data for silicon nanospheres are in an excellent agreement with both analytical calculations based on Green's function approach and the full‐wave numerical simulations. Our findings further substantiate dielectric nanoparticles as strong candidates for many applications in enhanced sensing, spectroscopy and nonlinear processes at the nanoscale.