Transverse scattering and generalized Kerker effects in all-dielectric Mie-resonant meta-optics

TL;DR

This paper introduces a novel transverse scattering effect in all-dielectric nanophotonics, achieved through Fano interference, enabling zero reflection and enhanced field effects for advanced optical applications.

Contribution

It demonstrates experimentally a new transverse scattering phenomenon in dielectric metasurfaces, expanding control over light scattering beyond traditional Kerker effects.

Findings

Achieved nearly complete suppression of forward and backward scattering.

Demonstrated zero reflection in dielectric metasurfaces with transverse scattering.

Enhanced field effects for filtering, nonlinear optics, and sensing applications.

Abstract

All-dielectric resonant nanophotonics lies at the heart of modern optics and nanotechnology due to the unique possibilities to control scattering of light from high-index dielectric nanoparticles and metasurfaces. One of the important concepts of dielectric Mie-resonant nanophotonics is associated with the Kerker effect that drives the unidirectional scattering of light from nanoantennas and Huygens' metasurfaces. Here we suggest and demonstrate experimentally a novel effect manifested in the nearly complete simultaneous suppression of both forward and backward scattered fields. This effect is governed by the Fano interference between an electric dipole and off-resonant quadrupoles, providing necessary phases and amplitudes of the scattered fields to achieve the transverse scattering. We extend this concept to dielectric metasurfaces that demonstrate zero reflection with transverse scattering and strong field enhancement for resonant light filtering, nonlinear effects, and sensing.