Uncovering extreme nonlinear dynamics in solids through time-domain field analysis

Time-domain analysis of harmonic fields with sub-cycle resolution is now experimentally viable due to the emergence sensitive, on-chip techniques for petahertz-scale optical-field sampling. We demonstrate how such a time-domain, field-resolved uncovers extreme nonlinear electron dynamics responsible high-harmonic generation within solids. Time-dependent density functional theory was used simulate from solid-state band-gap system driven by near- mid-infrared waveforms. Particular attention paid regimes where both intraband and interband emission mechanisms play critical role in shaping response. show that time-domain radiation identifies interplay between intra- dynamical processes underlying light generation. With further analysis, we changes dominant regime can occur after only slight peak driving intensity central wavelength. also reveals, first time, possibility rapid mechanism temporal window pulse envelope. Finally, examine experimental viability performing using realistic parameters.