1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; 2 School of Mathematics and Physics, Hubei Polytechnic University, Huangshi 435003, China; 3 College of Physics, Jilin University, Changchun 130012, China
Abstract We perform a theoretical study on dynamic interference in single photon ionization of ground state hydrogen atoms in the presence of a super-intense ultra-fast chirped laser pulse of different chirp types (equal-power and equal-FWHM laser pulses) by numerically solving the time-dependent Schrödinger equation in one dimension. We investigate the influences of peak intensity and chirp parameters on the instantaneous ionization rate and photoelectron yield, respectively. We also compare the photoelectron energy spectra for the ionization by the laser pulses with different chirp types. We find that the difference between the instantaneous ionization rates for the ionization of hydrogen atom driven by two different chirped laser pulses is originated from the difference in variation of vector potentials with time.
(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11774131 and 91850114).
Corresponding Authors:
Liguang Jiao, Aihua Liu
E-mail: lgjiao@jlu.edu.cn;aihualiu@jlu.edu.cn
Cite this article:
Fengzheng Zhu(朱风筝), Xiaoyu Liu(刘晓煜), Yue Guo(郭月), Ningyue Wang(王宁月), Liguang Jiao(焦利光), and Aihua Liu(刘爱华) Chirp-dependent ionization of hydrogen atoms in the presence of super-intense laser pulses 2021 Chin. Phys. B 30 094209
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