Fig. 1: All-optical spectroscopy of dynamical band structure.
From: Observation of light-driven band structure via multiband high-harmonic spectroscopy
a, Non-adiabatic Landau–Dykhne-type transition between a pair of bands. b, Two-colour HHG spectroscopy probes the internal dynamics, mapping the temporal properties of electron trajectories, transitions between the bands as well as their laser-driven modifications.
