Chirp-dependent ionization of hydrogen atoms in the presence of super-intense laser pulses

doi:10.1088/1674-1056/ac192c

中国物理B ›› 2021, Vol. 30 ›› Issue (9): 94209-094209.doi: 10.1088/1674-1056/ac192c

Chirp-dependent ionization of hydrogen atoms in the presence of super-intense laser pulses

Fengzheng Zhu(朱风筝)^1,2, Xiaoyu Liu(刘晓煜)¹, Yue Guo(郭月)¹, Ningyue Wang(王宁月)¹, Liguang Jiao(焦利光)^3,†, and Aihua Liu(刘爱华)^1,‡

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

收稿日期:2021-06-16 修回日期:2021-07-19 接受日期:2021-07-30 出版日期:2021-08-19 发布日期:2021-09-06
通讯作者: Liguang Jiao, Aihua Liu E-mail:lgjiao@jlu.edu.cn;aihualiu@jlu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11774131 and 91850114).

Chirp-dependent ionization of hydrogen atoms in the presence of super-intense laser pulses

Fengzheng Zhu(朱风筝)^1,2, Xiaoyu Liu(刘晓煜)¹, Yue Guo(郭月)¹, Ningyue Wang(王宁月)¹, Liguang Jiao(焦利光)^3,†, and Aihua Liu(刘爱华)^1,‡

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

Received:2021-06-16 Revised:2021-07-19 Accepted:2021-07-30 Online:2021-08-19 Published:2021-09-06
Contact: Liguang Jiao, Aihua Liu E-mail:lgjiao@jlu.edu.cn;aihualiu@jlu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11774131 and 91850114).

摘要/Abstract

摘要： 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.

关键词: ultrafast laser field, single photon ionization, quantum interference

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.

Key words: ultrafast laser field, single photon ionization, quantum interference

中图分类号: (Spectra induced by strong-field or attosecond laser irradiation)

33.20.Xx

42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)

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[J]. 中国物理B, 2021, 30(9): 94209-094209.

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Chirp-dependent ionization of hydrogen atoms in the presence of super-intense laser pulses

Chirp-dependent ionization of hydrogen atoms in the presence of super-intense laser pulses

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