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 …

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 …

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

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

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

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 …

As the most common nonlinear optical process, second harmonic generation (SHG) has
important application value in the field of nanophotonics. With the rapid development of …

The capability of locally engineering the nonlinear optical properties of media is crucial in
nonlinear optics. Although poling is the most widely employed technique for achieving …

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