Fano resonances in light scattering by finite obstacles

Abstract

Light scattering by finite obstacles, either a single particle or a number of particles in arbitrary configuration, exhibits various resonant effects. It turns out that almost any resonant response, either in directional or total light scattering, can be efficiently described in terms of Fano resonance. One of the peculiar features of the Fano resonance is complete destructive interference, which can be associated with radiationless excitations, such as nontrivial anapole modes.