When solids are exposed to intense laser fields whose forces are comparable to the binding
forces of valence electrons in crystals, nonlinear optics of solids advances to the …

High harmonic generation (HHG) from gas-phase atoms (or molecules) has opened up a
new frontier in ultrafast optics, where attosecond time resolution and angstrom spatial …

As a quantum material, Weyl semimetal has a series of electronic-band-structure features,
including Weyl points with left and right chirality and corresponding Berry curvature, which …

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 …

High harmonic generation (HHG) has developed in recent years as a promising tool for
ultrafast materials spectroscopy. At the forefront of these advancements, several works …

By employing the exact diagonalization method, we investigate the high-harmonic
generation (HHG) of the correlated systems under the strong laser irradiation. For the …

We theoretically investigate high harmonic generation (HHG) from silicon thin films with
thicknesses from a few atomic layers to a few hundreds of nanometers, to determine the …

As a promising avenue to obtain a new extreme ultraviolet light source and detect electronic
properties, high-harmonic generation (HHG) has been actively developed in both theory and …

High-order harmonic generation in solids, the nonlinear up-conversion of coherent radiation
resulting from the interaction of a strong and short laser pulse with a solid sample, has come …

In this work, the nonlinear optical response, and in particular, the high harmonic generation
of semiconductors, is addressed by using the Wannier gauge. One of the main problems in …