Compared with conventional optical elements, 2D photonic metasurfaces, consisting of
arrays of antennas with subwavelength thickness (the 'meta-atoms'), enable the …

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

Nonlinear optical phenomena in nanostructured materials have been challenging our
perceptions of nonlinear optical processes that have been explored since the invention of …

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

The present status and development of strong-field nano-optics, an emerging field of
nonlinear optics, is discussed. A nonperturbative regime of light-matter interactions is …

We present an all-dielectric germanium nanosystem exhibiting a strong third order nonlinear
response and efficient third harmonic generation in the optical regime. A thin germanium …

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

Boosting nonlinear frequency conversion in extremely confined volumes remains a
challenge in nano-optics research, but can enable applications in nanomedicine …

High-index dielectric nanostructures can support optical resonances of electric and
magnetic character with ultralow linear absorption. In contrast to plasmonics, they can be …

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