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Chin. Phys. B, 2018, Vol. 27(8): 083202    DOI: 10.1088/1674-1056/27/8/083202
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Simultaneous study of the lower order harmonic and photoelectron emission from an atom in intense laser pulse

Yan Yan(闫妍)1,2, Fu-Ming Guo(郭福明)1,2, Jun Wang(王俊)1,2, Ji-Gen Chen(陈基根)3, Yu-Jun Yang(杨玉军)1,2
1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy(Jilin University), Changchun 130012, China;
3 Department of Physics and Materials Engineering, Taizhou University, Taizhou 318000, China
Abstract  We simultaneously investigate variations of a low order harmonic and photoelectron emission with an incident laser intensity by solving the time-dependent Schrödinger equation in a momentum space. It can be found that, the intensity of low order harmonic and photoelectron are gradually enhanced with the increase of the laser intensity, when the laser frequency is not in resonance with the transition frequency between the laser-induced high excited states and the ground state. If the resonance occurs, the intensity of the lower order harmonic is reduced and the interference can be observed in the lower order photoelectron spectra.
Keywords:  high-order harmonic generation      above threshold ionization  
Received:  11 May 2018      Revised:  17 June 2018      Accepted manuscript online: 
PACS:  32.80.Rm (Multiphoton ionization and excitation to highly excited states)  
  42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)  
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0403300), the National Natural Science Foundation of China (Grant Nos. 11774129, 11274141, 11627807, 11604119, and 11534004), and the Jilin Provincial Research Foundation for Basic Research, China (Grant No. 20170101153JC).
Corresponding Authors:  Yu-Jun Yang     E-mail:  yangyj@jlu.edu.cn

Cite this article: 

Yan Yan(闫妍), Fu-Ming Guo(郭福明), Jun Wang(王俊), Ji-Gen Chen(陈基根), Yu-Jun Yang(杨玉军) Simultaneous study of the lower order harmonic and photoelectron emission from an atom in intense laser pulse 2018 Chin. Phys. B 27 083202

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