Artificial chiral nanostructures have been subjected to extensive research for their unique
chiroptical activities. Planarized chiral films of ultrathin thicknesses are in particular demand …

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 …

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

Throughout the 19th and 20th century, chirality has mostly been associated with chemistry.
However, while chirality can be very useful for understanding molecules, molecules are not …

Optical chiral metamaterials have recently attracted considerable attention because they
offer new and exciting opportunities for fundamental research and practical applications …

Optical metasurfaces are thin‐layer subwavelength‐patterned structures that interact
strongly with light. Metasurfaces have become the subject of several rapidly growing areas …

Strong chiroptical effects recently reported result from the interaction of light with chiral
plasmonic nanostructures. Such nanostructures can be used to enhance the chiroptical …

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

We review the physics and some applications of photonic structures designed for the
realization of strong nonlinear chiroptical response. We pay much attention to the recent …