High-order harmonic generation of ZnO crystals in chirped and static electric fields

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外文摘要：High harmonic generation in ZnO crystals under chirped single-color field and static electric field are investigated by solving the semiconductor Bloch equation(SBE).It is found that when the chirp pulse is introduced,the interference structure becomes obvious while the harmonic cutoff is not extended.Furthermore,the harmonic efficiency is improved when the static electric field is included.These phenomena are demonstrated by the classical recollision model in real space affected by the waveform of laser field and inversion symmetry.Specifically,the electron motion in k-space shows that the change of waveform and the destruction of the symmetry of the laser field lead to the incomplete X-structure of the crystal-momentum-resolved(k-resolved)inter-band harmonic spectrum.Furthermore,a pre-acceleration process in the solid four-step model is confirmed.

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、何永林、谢卓璇、高芳艳、徐清芸、葛鑫磊、罗香怡、郭静

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作者单位：

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

School of Physics and Electromechanical Engineering,Hexi University,Zhangye 734000,China

Institute of Theoretical Physics,Hexi University,Zhangye 734000,China

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

College of Physics and Electronic Information,Baicheng Normal University,Baicheng 137000,China

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基金：

Natural Science Foundation of Jilin ProvinceNational Natural Science Foundation of China

项目编号：

20220101010JC12074146

出版年：

2024

DOI：

10.1088/1674-1056/acfa89

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(1)

参考文献量49