High harmonic generation in crystal SiO2 by sub-10-fs laser pulses

doi:10.1088/1674-1056/acc452

中国物理B ›› 2023, Vol. 32 ›› Issue (6): 63301-063301.doi: 10.1088/1674-1056/acc452

High harmonic generation in crystal SiO₂ by sub-10-fs laser pulses

Shuai Wang(王帅)^1,2, Jiawei Guo(郭嘉为)⁴, Xinkui He(贺新奎)^1,2,3,†, Yueying Liang(梁玥瑛)^1,2, Baichuan Xie(谢百川)^1,2, Shiyang Zhong(钟诗阳)¹, Hao Teng(滕浩)¹, and Zhiyi Wei(魏志义)^1,2,3,‡

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100490, China;
3 Songshan Lake Materials Laboratory, Dongguan 523808, China;
4 School of Physics, Nankai University, Tianjin 300071, China

收稿日期:2023-02-22 修回日期:2023-03-10 接受日期:2023-03-15 出版日期:2023-05-17 发布日期:2023-06-07
通讯作者: Xinkui He, Zhiyi Wei E-mail:xinkuihe@iphy.ac.cn;zywei@iphy.ac.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 91850209 and 11974416).

High harmonic generation in crystal SiO₂ by sub-10-fs laser pulses

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100490, China;
3 Songshan Lake Materials Laboratory, Dongguan 523808, China;
4 School of Physics, Nankai University, Tianjin 300071, China

Received:2023-02-22 Revised:2023-03-10 Accepted:2023-03-15 Online:2023-05-17 Published:2023-06-07
Contact: Xinkui He, Zhiyi Wei E-mail:xinkuihe@iphy.ac.cn;zywei@iphy.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 91850209 and 11974416).

摘要/Abstract

摘要： The high harmonic generation (HHG) by few-cycle laser pulses is essential for research in strong-field solid-state physics. Through comparison of high harmonic spectra of solids generated by laser pulses with varying durations, we discovered that lasers with good dispersion compensation are capable of producing a broad spectrum of high harmonics. As the pulse duration is further compressed, several interference peaks appear in the broad spectrum. Moreover, we conducted simulations using the semiconductor Bloch equation, considering the effect of Berry curvature, to better understand this process. Our work provides a valuable approach for studying HHG by few-cycle laser pulses in solid materials, expanding the application of HHG in attosecond physics.

关键词: solid state hhg, few-cycle laser pulses, broad spectrum, interference peak

Abstract: The high harmonic generation (HHG) by few-cycle laser pulses is essential for research in strong-field solid-state physics. Through comparison of high harmonic spectra of solids generated by laser pulses with varying durations, we discovered that lasers with good dispersion compensation are capable of producing a broad spectrum of high harmonics. As the pulse duration is further compressed, several interference peaks appear in the broad spectrum. Moreover, we conducted simulations using the semiconductor Bloch equation, considering the effect of Berry curvature, to better understand this process. Our work provides a valuable approach for studying HHG by few-cycle laser pulses in solid materials, expanding the application of HHG in attosecond physics.

Key words: solid state hhg, few-cycle laser pulses, broad spectrum, interference peak

中图分类号: (Spectra induced by strong-field or attosecond laser irradiation)

33.20.Xx

Shuai Wang(王帅), Jiawei Guo(郭嘉为), Xinkui He(贺新奎), Yueying Liang(梁玥瑛), Baichuan Xie(谢百川), Shiyang Zhong(钟诗阳), Hao Teng(滕浩), and Zhiyi Wei(魏志义). High harmonic generation in crystal SiO₂ by sub-10-fs laser pulses[J]. 中国物理B, 2023, 32(6): 63301-063301.

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High harmonic generation in crystal SiO₂ by sub-10-fs laser pulses

High harmonic generation in crystal SiO₂ by sub-10-fs laser pulses

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