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 …

Metasurfaces have recently risen to prominence in optical research, providing unique
functionalities that can be used for imaging, beam forming, holography, polarimetry, and …

Optical bound states in the continuum (BICs) underpin the existence of strongly localized
waves embedded into the radiation spectrum. Here we bring the concept of BICs to the field …

Tailoring optical nonlinear effects (eg, harmonic generation, sum-frequency mixing, etc.) in
the recently emerging all-dielectric platform is important for both fundamental science and …

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

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

Higher-order optical harmonics entered the realm of nanostructured solids being observed
recently in optical gratings and metasurfaces with a subwavelength thickness. Structuring …

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 …

Lithium niobate (LiNbO3) is a material that has drawn great interest in nonlinear optics
because of its large nonlinear susceptibility and wide transparency window. However, for …

Resonant metasurfaces provide a unique platform for enhancing multiwave nonlinear
interactions. However, the difficulties over mode matching and material transparency place …