摘要
High-order harmonic generation(HHG)from an atom illuminated by a sinusoidally phase-modulated pulse is investigated by solving the time-dependent Schrödinger equation.The spectral shift that occurs in atomic HHG can be achieved easily using our laser pulse.It is shown that the photon energy of the generated harmonics is controllable within the range of 1 eV.The shift of the frequency peak position is rooted in the asymmetry of the rising and falling parts of the laser pulse.We also show that by varying the phase parameters in the frequency domain of the laser one can adjust and control the shift in atomic harmonic spectra.
作者
乔月
王俊
闫妍
宋思蒙
陈洲
刘爱华
陈基根
郭福明
杨玉军
Yue Qiao;Jun Wang;Yan Yan;Simeng Song;Zhou Chen;Aihua Liu;Jigen Chen;Fuming Guo;Yujun Yang(Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China;Department of Physics and Materials Engineering,Taizhou University,Taizhou 318000,China)
基金
supported by the National Natural Science Foundation of China(Grant Nos.11604119,11627807,11774129,11774131,11904120,11975012,and 91850114)
the Outstanding Youth Project of Taizhou University(Grant No.2019JQ002)。
