Abstract
By numerically solving the semiconductor Bloch equation(SBEs),we theoretically study the high-harmonic genera-tion of ZnO crystals driven by one-color and two-color intense laser pulses.The results show the enhancement of harmonics and the cut-off remains the same in the two-color field,which can be explained by the recollision trajectories and electron excitation from multi-channels.Based on the quantum path analysis,we investigate contribution of different ranges of the crystal momentum k of ZnO to the harmonic yield,and find that in two-color laser fields,the intensity of the harmonic yield of different ranges from the crystal momentum makes a big difference and the harmonic intensity is depressed from all k channels,which is related to the interferences between harmonics from symmetric k channels.
基金项目
National Natural Science Foundation of China(12074146)
Natural Science Foundation of Jilin Province,China(20220101010JC)
NETL
NSTL
万方数据