Neighboring Atom Collisions in Solid-State High Harmonic Generation

Delocalization of HHG in ZnO. (a) 1D conduction and valence band structures along the ‐M direction in ZnO adopted in Reference [23]. The time-dependent position (b) and velocity (c) of electron (black) and hole (red) trajectories with initial ionization time at . (d) The distance between the ionization and recombination positions of the electron-hole pair as a function of ionization (dashed line) and recombination (solid line) instants, respectively. (e) The Wannier analysis with the same laser and material parameters as in (d).