title: Multifold Enhancement of Third-Harmonic Generation in Dielectric Nanoparticles Driven by Magnetic Fano Resonances.
abstract: Strong Mie-type magnetic dipole resonances in all-dielectric nanostructures provide novel opportunities for enhancing nonlinear effects at the nanoscale due to the intense electric and magnetic fields trapped within the individual nanoparticles. Here we study third-harmonic generation from quadrumers of silicon nanodisks supporting high-quality collective modes associated with the magnetic Fano resonance. We observe nontrivial wavelength and angular dependencies of the generated harmonic signal featuring a multifold enhancement of the nonlinear response in oligomeric systems.
authors.affiliation: Faculty of Physics, Lomonosov Moscow State University , Moscow 119991, Russia.
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Shorokhov
authors.affiliation: Faculty of Physics, Lomonosov Moscow State University , Moscow 119991, Russia.
authors.forename: Elizaveta V
authors.initials: EV
authors.lastname: Melik-Gaykazyan
authors.affiliation: Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University , Canberra, Australian Capital Territory 2601, Australia.
authors.forename: Daria A
authors.initials: DA
authors.lastname: Smirnova
authors.affiliation: Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University , Canberra, Australian Capital Territory 2601, Australia.
authors.forename: Ben
authors.initials: B
authors.lastname: Hopkins
authors.affiliation: Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University , Canberra, Australian Capital Territory 2601, Australia.
authors.forename: Katie E
authors.initials: KE
authors.lastname: Chong
authors.affiliation: Laser Physics Centre, Research School of Physics and Engineering, The Australian National University , Canberra, Australian Capital Territory 2601, Australia.
authors.forename: Duk-Yong
authors.initials: DY
authors.lastname: Choi
authors.affiliation: Faculty of Physics, Lomonosov Moscow State University , Moscow 119991, Russia.
authors.forename: Maxim R
authors.initials: MR
authors.lastname: Shcherbakov
authors.affiliation: Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University , Canberra, Australian Capital Territory 2601, Australia.
authors.forename: Andrey E
authors.initials: AE
authors.lastname: Miroshnichenko
authors.affiliation: Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University , Canberra, Australian Capital Territory 2601, Australia.
authors.forename: Dragomir N
authors.initials: DN
authors.lastname: Neshev
authors.affiliation: Faculty of Physics, Lomonosov Moscow State University , Moscow 119991, Russia.
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Fedyanin
authors.affiliation: Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University , Canberra, Australian Capital Territory 2601, Australia.
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar
keywords: Fano resonance; Nonlinear optics; metamaterials; silicon photonics; third-harmonic generation