We review the basic physics and applications of a special class of planar metamaterials,
often called metasurfaces, which are composed of optically thin and densely packed planar …

Frequency conversion processes, such as second-and third-harmonic generation, are
commonly realized in nonlinear optics, offering opportunities for applications in photonics …

Resonant metasurfaces are an attractive platform for enhancing the nonlinear optical
processes, such as second harmonic generation (SHG), since they can generate large local …

In the wake of intense research on metamaterials the two-dimensional analogue, known as
metasurfaces, has attracted progressively increasing attention in recent years due to the …

Plasmonics has emerged as an important research field in nanoscience and
nanotechnology. Recently, significant attention has been devoted to the observation and the …

When light interacts with metal nanostructures, it can couple to free-electron excitations near
the metal surface. The electromagnetic resonances associated with these surface plasmons …

Free from phase-matching constraints, plasmonic metasurfaces have contributed
significantly to the control of optical nonlinearity and enhancement of nonlinear generation …

Nonlinear nanophotonics is a rapidly developing field of research with many potential
applications for the design of nonlinear nanoantennas, light sources, nanolasers, and …

This Colloquium presents an overview of the research on nonlinear electromagnetic
metamaterials. The developed theoretical approaches and experimental designs are …

A review of nanoplasmonics is given. This includes fundamentals, nanolocalization of
optical energy and hot spots, ultrafast nanoplasmonics and control of the spatiotemporal …