Metasurfaces, the ultrathin, 2D version of metamaterials, have recently attracted a surge of
attention for their capability to manipulate electromagnetic waves. Recent advances in …

In this review, we survey the recent advances in nonlinear optics and the applications of two-
dimensional (2D) materials. We briefly cover the key developments pertaining to research in …

Spontaneous parametric down-conversion (SPDC) is one of the most versatile nonlinear
optical techniques for the generation of entangled and correlated single-photon pairs …

In recent years, terahertz waves have attracted significant attention for their promising
applications. Due to a broadband optical response, an ultra-fast relaxation time, a high …

Frequency conversion such as harmonic generation is a fundamental physical process in
nonlinear optics. The conventional nonlinear optical systems suffer from bulky size and …

Nonlinear materials can exhibit bistability, namely support different possible outputs for the
same input, depending on the excitation history. This property can find direct application to …

In the field of nonlinear optics, graphene has shown astounding nonlinear properties,
including the generation of harmonics across a wide frequency range. Harmonic generation …

The burgeoning research into two-dimensional (2D) materials opens a door to novel
photonic and optoelectronic devices utilizing their fascinating electronic and photonic …

Nonlinear light–matter interactions are typically enhanced by increasing the local field and
its interaction time with matter. Conventional methods to achieve these goals are based on …

High input intensities are usually required to efficiently produce nonlinear optical effects in
ultrathin structures due to their extremely weak nature. This problem is particularly critical at …