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作 者:Ling-Yu Zhang Zhuo-Xuan Xie Can Wang Xin-Lei Ge Jing Guo 张玲玉;谢卓璇;王灿;葛鑫磊;郭静(Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China;College of Physical Science and Technology,Bohai University,Jinzhou 121013,China)
机构地区:[1]Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China [2]College of Physical Science and Technology,Bohai University,Jinzhou 121013,China
出 处:《Chinese Physics B》2024年第9期366-372,共7页中国物理B(英文版)
基 金:the National Natural ScienceFoundation of China (Grant No. 12074146);the NaturalScience Foundation of Jilin Province, China (GrantNo. 20220101010JC).
摘 要:By numerically solving the semiconductor Bloch equation(SBEs),we theoretically study the high-harmonic generation 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.
关 键 词:high-order harmonic generation the semiconductor Bloch equation k-resolvedinter-bandhar-monic spectrum four-step semiclassical model
分 类 号:TN24[电子电信—物理电子学]
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