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.
作者
王帅
郭嘉为
贺新奎
梁玥瑛
谢百川
钟诗阳
滕浩
魏志义
Shuai Wang;Jiawei Guo;Xinkui He;Yueying Liang;Baichuan Xie;Shiyang Zhong;Hao Teng;Zhiyi Wei(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100490,China;Songshan Lake Materials Laboratory,Dongguan 523808,China;School of Physics,Nankai University,Tianjin 300071,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.91850209 and 11974416)。
