Tunable spectral shift of high-order harmonic generation in atoms using a sinusoidally phase-modulated pulse
Yue Qiao(乔月)1,2, Jun Wang(王俊)1,†, Yan Yan(闫妍)1, Simeng Song(宋思蒙)1, Zhou Chen(陈洲)1, Aihua Liu(刘爱华)1, Jigen Chen(陈基根)2, Fuming Guo(郭福明)1,‡, and Yujun Yang(杨玉军)1,§
1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; 2 Department of Physics and Materials Engineering, Taizhou University, Taizhou 318000, China
Abstract 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.
(Distances, redshifts, radial velocities; spatial distribution of galaxies)
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11604119, 11627807, 11774129, 11774131, 11904120, 11975012, and 91850114) and the Outstanding Youth Project of Taizhou University (Grant No. 2019JQ002).
Corresponding Authors:
Jun Wang, Fuming Guo, Yujun Yang
E-mail: wangjun86@jlu.edu.cn;guofm@jlu.edu.cn;yangyj@jlu.edu.cn
Cite this article:
Yue Qiao(乔月), Jun Wang(王俊), Yan Yan(闫妍), Simeng Song(宋思蒙), Zhou Chen(陈洲), Aihua Liu(刘爱华), Jigen Chen(陈基根), Fuming Guo(郭福明), and Yujun Yang(杨玉军) Tunable spectral shift of high-order harmonic generation in atoms using a sinusoidally phase-modulated pulse 2022 Chin. Phys. B 31 064214
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