Nonlinear Light Generation Driven by Collective Magnetic Modes in Oligomers of Silicon Nanoparticles Excited by Vector Beams

Abstract

We demonstrated two orders of magnitude enhancement of the third-harmonic intensity for isolated nanoclusters of silicon nanoparticles illuminated by normally incident azimuthally polarized cylindrical vector beams at the wavelength of oligomer’s out-of-plane magnetic mode.

Nonlinear optics with resonant metasurfaces

“…Article Template Pertsch & Kivshar/March 2020 nanoresonators, some work concentrated also on exploring effects occurring in the transition from single dielectric resonators to oligomers, consisting of just a small ensemble of dielectric nanoresonators. [67][68][69] It turned out that many of the resonance effects in metasurfaces could already be observed in oligomers, due to the interaction of 3 or 4 resonators.…”