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We consider the motion of charge carriers in a bulk wide-gap dielectricinteracting with a few-cycle laser pulse. A semiclassical model based on Blochequations is applied to describe the emerging time-dependent macroscopiccurrents for laser intensities approaching the damage threshold. At such laserintensities, electrons can reach edges of the first Brillouin zone even forelectron-phonon scattering rates as high as those known for SiO_2. We findthat, whenever this happens, Brag-like reflections of electron waves, alsoknown as Bloch oscillations, affect the dependence of the charge displaced bythe laser pulse on its carrier-envelope phase.

The effect of dynamical Bloch oscillations on optical-field-induced current in a wide gap dielectric