Shift current is a direct current generated from nonlinear light–matter interaction in a
noncentrosymmetric crystal and is considered a promising candidate for next-generation …

We demonstrate pronounced electric-field-induced second-harmonic generation in naturally
inversion symmetric 2H stacked bilayer MoS2 embedded into microcapacitor devices. By …

Many-body effects are known to play a crucial role in the electronic and optical properties of
solids and nanostructures. Nevertheless, the majority of theoretical and numerical …

To simultaneously maintain large second harmonic generation (SHG) and high laser
damage thresholds (LDTs) for mid-and far-infrared (IR) nonlinear optical (NLO) materials is …

We present an ab initio real-time-based computational approach to study nonlinear optical
properties in condensed matter systems that is especially suitable for crystalline solids and …

Nonlinear optical phenomena are widely used for the study of semiconductor materials. The
paper presents an overview of experimental and theoretical studies of excitons by the …

We present in detail the formulation of the ab initio theory we have developed for the
calculation of the macroscopic second-order susceptibility χ (2). We find a general …

Nonlinear optical (NLO) materials with strong second harmonic generation (SHG) responses
are technologically and scientifically important for tunable lasers. This work puts forward a …

The two-dimensional ferroelectrics GeS, GeSe, SnS and SnSe are expected to have large
spontaneous in-plane electric polarization and enhanced shift-current response. Using …

Nonlinear optics is an important and exciting field of fundamental and applied research, with
applications in many different disciplines such as physics chemistry, material science and …