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Enhanced second-harmonic generation with structured light in AlGaAs nanoparticles governed by magnetic response
Elizaveta V. Melik-Gaykazyan, Kirill L. Koshelev, Jae-Hyuck Choi +4
We employ structured light for the second-harmonic generation from subwavelength AlGaAs nanoparticles that support both electric and magnetic multipolar Mie resonances. The vectori…
Meta-optics and bound states in the continuum
Kirill Koshelev, Andrey Bogdanov, Yuri Kivshar
We discuss the recent advances in meta-optics and nanophotonics associated with the physics of bound states in the continuum (BICs). Such resonant states appear due to a strong cou…
Asymmetric metasurfaces with high- resonances governed by bound states in the continuum
Kirill Koshelev, Sergey Lepeshov, Mingkai Liu +2
We reveal that metasurfaces created by seemingly different lattices of (dielectric or metallic) meta-atoms with broken in-plane symmetry can support sharp high- resonances that…
Giant nonlinear response at the nanoscale driven by bound states in the continuum
Luca Carletti, Kirill Koshelev, Costantino De Angelis +1
Being motivated by the recent prediction of high- supercavity modes in subwavelength dielectric resonators, we study the second-harmonic generation from isolated subwavelength A…
Strong coupling between excitons in transition metal dichalcogenides and optical bound states in the continuum
K. L. Koshelev, S. K. Sychev, Z. F. Sadrieva +2
Being motivated by recent achievements in the rapidly developing fields of optical bound states in the continuum (BICs) and excitons in monolayers of transition metal dichalcogenid…