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 …

Key properties of quantum materials stem from dynamic interaction chains that connect
stable electronic quasiparticles through short-lived coherences, which are difficult to control …

High-harmonic generation (HHG) in solids has emerged in recent years as a rapidly
expanding and interdisciplinary field, attracting attention from both the condensed-matter …

High-harmonic generation (HHG) in bulk solids permits the exploration of materials in a new
regime of strong fields and attosecond timescales,,,,,. The generation process has been …

The microscopic valence electron density determines the optical, electronic, structural and
thermal properties of materials. However, current techniques for measuring this electron …

When intense light interacts with an atomic gas, recollision between an ionizing electron and
its parent ion creates high-order harmonics of the fundamental laser frequency. This sub …

Valence electrons contribute a small fraction of the total electron density of materials, but
they determine their essential chemical, electronic and optical properties. Strong laser fields …

Strong-field laser excitation of solids can produce extremely nonlinear electronic and optical
behaviour. As recently demonstrated, this includes the generation of high harmonics …

Nonlinear optics (NLO) of transition metal dichalcogenides (TMDs) is promising for the on‐
chip photonic and optoelectronic applications. In this review, we will survey the current …

In strong-field physics and attosecond science, intense light induces ultrafast electron
dynamics. Such ultrafast dynamics of electrons in matter is at the core of phenomena such …