All-dielectric metamaterials and metasurfaces have been demonstrated as ideal platforms to
manipulate electromagnetic waves and enhance light–matter interaction. Analogous to …

Optical metasurfaces, ie arrays of nanoantennas with sub-wavelength size and separation,
enable the manipulation of light-matter interactions in miniaturized optical components with …

Lithium niobate is an excellent and widely used material for nonlinear frequency conversion
due to its strong optical nonlinearity and broad transparency region. Here, we report the …

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

We predict theoretically a regime of photon-pair generation driven by the interplay of
multiple bound states in the continuum resonances in nonlinear metasurfaces. This …

In its 60 years of existence, the field of nonlinear optics has gained momentum especially
over the past two decades thanks to major breakthroughs in material science and …

Efficient frequency up-conversion of coherent light at the nanoscale is highly demanded for
a variety of modern photonic applications, but it remains challenging in nanophotonics …

Second harmonic generation (SHG) is a coherent nonlinear phenomenon that plays an
important role in laser color conversion. Lithium niobate (LN), which features both a large …

Nonlinear light sources are central to a myriad of applications, driving a quest for their
miniaturisation down to the nanoscale. In this quest, nonlinear metasurfaces hold a great …

Optical metasurfaces have recently emerged as the game changer in light manipulation and
opened up new perspectives in many subfields of optics and photonics. Recent …