中国物理B ›› 2019, Vol. 28 ›› Issue (5): 53201-053201.doi: 10.1088/1674-1056/28/5/053201

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Dependence of photoelectron-momentum distribution of H2+ molecule on orientation angle and laser ellipticity

Hong-Dan Zhang(张宏丹), Si-Qi Zhang(张思琪), Lei Ji(纪磊), Qi Zhen(甄琪), Jing Guo(郭静), Xue-Shen Liu(刘学深)   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029, China
  • 收稿日期:2019-02-15 修回日期:2019-03-07 出版日期:2019-05-05 发布日期:2019-05-05
  • 通讯作者: Jing Guo, Xue-Shen Liu E-mail:gjing@jlu.edu.cn;liuxs@jlu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11271158, 11574117, and 61575077) and the Natural Science Foundation of Jilin Province of China (Grants No. 20180101225JC).

Dependence of photoelectron-momentum distribution of H2+ molecule on orientation angle and laser ellipticity

Hong-Dan Zhang(张宏丹)1, Si-Qi Zhang(张思琪)1, Lei Ji(纪磊)2, Qi Zhen(甄琪)1, Jing Guo(郭静)1, Xue-Shen Liu(刘学深)1   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029, China
  • Received:2019-02-15 Revised:2019-03-07 Online:2019-05-05 Published:2019-05-05
  • Contact: Jing Guo, Xue-Shen Liu E-mail:gjing@jlu.edu.cn;liuxs@jlu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11271158, 11574117, and 61575077) and the Natural Science Foundation of Jilin Province of China (Grants No. 20180101225JC).

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摘要：

By numerically solving the two-dimensional time-dependent Schrödinger equation under the frozen-nuclei approximation, we are able to study the molecular photoelectron-momentum distribution (MPMD) of H2+ with different orientation angles driven by elliptically polarized laser pulse with varying ellipticities. Our numerical results show that the MPMD is sensitive to the orientation angle and the laser ellipticity, which can be explained by the attosecond perturbation ionization theory and the exactly solvable photoionization model. When the ellipticity ε=0, the final MPMD of x-oriented H2+ shows a distinct six-lobe pattern that is different from that with ε=0.5 and ε=1. The evolutions of electron wave packet (EWP) and MPMD with x-oriented H2+ are presented to interpret this distinct pattern.

关键词: H2+ molecule, molecular photoelectron-momentum distribution, attosecond perturbation ionization theory

Abstract:

By numerically solving the two-dimensional time-dependent Schrödinger equation under the frozen-nuclei approximation, we are able to study the molecular photoelectron-momentum distribution (MPMD) of H2+ with different orientation angles driven by elliptically polarized laser pulse with varying ellipticities. Our numerical results show that the MPMD is sensitive to the orientation angle and the laser ellipticity, which can be explained by the attosecond perturbation ionization theory and the exactly solvable photoionization model. When the ellipticity ε=0, the final MPMD of x-oriented H2+ shows a distinct six-lobe pattern that is different from that with ε=0.5 and ε=1. The evolutions of electron wave packet (EWP) and MPMD with x-oriented H2+ are presented to interpret this distinct pattern.

Key words: H2+ molecule, molecular photoelectron-momentum distribution, attosecond perturbation ionization theory

中图分类号:  (Multiphoton ionization and excitation to highly excited states)

  • 32.80.Rm
32.80.Fb (Photoionization of atoms and ions) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)