2026-10-12T15:29:26Z https://www.scidb.cn/oai

10.57760/sciencedb.13955 2023-12-11T09:58:31Z

2023-12-11 High-order harmonic generation from the interference of intra-cycle trajectories in the k-space doi:10.57760/sciencedb.13955 en Considering the crystal momenta of the entire k-space, we demonstrate that constructive intra-cycle interference of electrons enhances the high-order harmonic generation (HHG) of a GaN crystal from dominant interband Bloch oscillations. This results in a higher plateau of the HHG spectrum at a driven yield strength below the Bloch field strength. This phenomenon is confirmed in both the two-band and three-band models. Using two-color laser fields, the constructive or destructive interference of interband Bloch oscillations can be tuned. Our findings reveal the essential impact of intra-cycle interference in the full k-space on the HHG in solids.  High-order harmonic generation; intra-cycle; interference 李方舒 李娜 刘鹏 王占山 PUBLIC https://creativecommons.org/publicdomain/zero/1.0/ dataset Science Data Bank