Metasurfaces as optically thin composite layers can be modeled as electric and magnetic
surface current sheets flowing in the layer volume in the metasurface plane. In the most …

This review overviews the state of the art of research into high-index dielectric
nanoresonators and their use in functional photonic nanostructures at optical frequencies …

Nonuniform metasurfaces (electrically thin composite layers) can be used for shaping
refracted and reflected electromagnetic waves. However, known design approaches based …

Topological photonics has emerged as a route to robust optical circuitry protected against
disorder, and now includes demonstrations such as topologically protected lasing,–and …

The discovery of two-dimensional topological photonic systems has transformed our views
on the propagation and scattering of electromagnetic waves, and the quest for similar states …

All-dielectric metasurfaces supporting photonic bound states in the continuum (BICs) are an
exciting toolkit for achieving resonances with ultranarrow linewidths. However, the transition …

Nonlinear optics is a well-established field of research that traditionally relies on the
interaction of light with macroscopic nonlinear media over distances significantly greater …

In this Perspective, we outline the recent progress, primary achievements, and further
directions in the development of high refractive index nanostructures and metasurfaces. In …

We present detailed analytical modeling and in-depth investigation of wide-angle reflect-
mode metagrating beam splitters. These recently introduced ultrathin devices are capable of …

Controlling the propagation and coupling of light to sub-wavelength antennas is a crucial
prerequisite for many nanoscale optical devices. Recently, the main focus of attention has …