Interference of harmonics emitted by different tunneling momentum channels in laser fields

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外文摘要：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.

外文关键词：

high-order harmonic generationthe semiconductor Bloch equationk-resolved inter-band har-monic spectrumfour-step semiclassical model

作者：

张玲玉、谢卓璇、王灿、葛鑫磊、郭静

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作者单位：

Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China

College of Physical Science and Technology,Bohai University,Jinzhou 121013,China

基金：

National Natural Science Foundation of ChinaNatural Science Foundation of Jilin Province,China

项目编号：

1207414620220101010JC

出版年：

2024

DOI：

10.1088/1674-1056/ad5d95

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

年,卷(期)：2024.33(9)