Interference effect of photoionization of hydrogen atoms by ultra-short and ultra-fast high-frequency chirped pulses

doi:10.1088/1674-1056/28/8/083403

中国物理B ›› 2019, Vol. 28 ›› Issue (8): 83403-083403.doi: 10.1088/1674-1056/28/8/083403

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Interference effect of photoionization of hydrogen atoms by ultra-short and ultra-fast high-frequency chirped pulses

Ningyue Wang(王宁月), Aihua Liu(刘爱华)

1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 30012, China;
2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China

收稿日期:2019-05-17 修回日期:2019-06-13 出版日期:2019-08-05 发布日期:2019-08-05
通讯作者: Aihua Liu E-mail:aihualiu@jlu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11774131 and 91850114).

Interference effect of photoionization of hydrogen atoms by ultra-short and ultra-fast high-frequency chirped pulses

Ningyue Wang(王宁月)^1,2, Aihua Liu(刘爱华)^1,2

1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 30012, China;
2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China

Received:2019-05-17 Revised:2019-06-13 Online:2019-08-05 Published:2019-08-05
Contact: Aihua Liu E-mail: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： The photoionization of a hydrogen atom from its ground state with ultra-fast chirped pulses is investigated by numerically solving the time-dependent Schrödinger equation within length, velocity, and Kramers-Henneberger gauges. Converged results for all gauges for chirp-free pulses agree with the prediction of dynamic interference for ground state hydrogen atoms predicted recently by Jiang and Burgdörfer[Opt. Express 26, 19921 (2018)]. In addition, we investigated photoelectron spectra of hydrogen atoms by chirped laser pulses, and showed that dynamic interference effect will be weaken for pulses with increasing linear chirp. Our numerical results can be understood and discussed in terms of an interplay of photoelectron wavepackets from first and second halves of laser enevelop, including the ac Stark energy level shift of the photoelectron final state and atomic stabilization effect at ultra-high intensities.

关键词: dynamic interference, super-intense laser, chirped pulses

Abstract: The photoionization of a hydrogen atom from its ground state with ultra-fast chirped pulses is investigated by numerically solving the time-dependent Schrödinger equation within length, velocity, and Kramers-Henneberger gauges. Converged results for all gauges for chirp-free pulses agree with the prediction of dynamic interference for ground state hydrogen atoms predicted recently by Jiang and Burgdörfer[Opt. Express 26, 19921 (2018)]. In addition, we investigated photoelectron spectra of hydrogen atoms by chirped laser pulses, and showed that dynamic interference effect will be weaken for pulses with increasing linear chirp. Our numerical results can be understood and discussed in terms of an interplay of photoelectron wavepackets from first and second halves of laser enevelop, including the ac Stark energy level shift of the photoelectron final state and atomic stabilization effect at ultra-high intensities.

Key words: dynamic interference, super-intense laser, chirped pulses

中图分类号: (Laser-modified scattering)

34.80.Qb

34.80.Dp (Atomic excitation and ionization) 32.80.Wr (Other multiphoton processes)

王宁月, 刘爱华. Interference effect of photoionization of hydrogen atoms by ultra-short and ultra-fast high-frequency chirped pulses[J]. 中国物理B, 2019, 28(8): 83403-083403.

Ningyue Wang(王宁月), Aihua Liu(刘爱华). Interference effect of photoionization of hydrogen atoms by ultra-short and ultra-fast high-frequency chirped pulses[J]. Chin. Phys. B, 2019, 28(8): 83403-083403.

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Interference effect of photoionization of hydrogen atoms by ultra-short and ultra-fast high-frequency chirped pulses

Interference effect of photoionization of hydrogen atoms by ultra-short and ultra-fast high-frequency chirped pulses

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