High-harmonic generation in atomic gases has been studied for decades, and has formed
the basis of attosecond science. Observation of high-order harmonics from bulk crystals was …

Recent progress in high power ultrafast short-wave and mid-wave infrared lasers has
enabled gas-phase high harmonic generation (HHG) in the water window and beyond, as …

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

We investigate theoretically high-harmonic generation (HHG) in bulk crystals exposed to
intense midinfrared lasers with photon energies smaller than the band gap. The two main …

The advent of visible-infrared laser pulses carrying a substantial fraction of their energy in a
single field oscillation cycle has opened a new era in the experimental investigation of …

The control of the electric and optical properties of semiconductors with microwave fields
forms the basis of modern electronics, information processing and optical communications …

Interaction of intense lasers with solid materials offers an alternative way to achieve high-
order harmonic generation (HHG). Since the underlying mechanisms of the harmonic …

The observation of nonperturbative high-order-harmonic generation in periodic solids has
been interpreted in terms of a two step process comprising tunnel ionization and radiation …

We review the status of strong-field and attosecond processes in bulk transparent solids
near the Keldysh tunneling limit. For high enough fields and low-frequency excitations, the …

We investigate high-order harmonic generation in a solid, modeled as a multilevel system
dressed by a strong infrared laser field. We show that the cutoff energies and the relative …