中国物理B ›› 2017, Vol. 26 ›› Issue (5): 58201-058201.doi: 10.1088/1674-1056/26/5/058201

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Wavelength dependence of electron localization of H2+ and its isotopomers in the UV-pump-probe scheme

Shan Xue(薛山), Hong-Chuan Du(杜洪川), Sheng-Jun Yue(岳生俊), Hong-Mei Wu(吴红梅), Bi-Tao Hu(胡碧涛)   

  1. 1 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
    2 Key Laboratory of Special Function Materials and Structure Design (Ministry of Education), Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2016-10-02 修回日期:2016-12-06 出版日期:2017-05-05 发布日期:2017-05-05
  • 通讯作者: Hong-Chuan Du, Bi-Tao Hu E-mail:duhch@lzu.edu.cn;hubt@lzu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11404153, 11135002, 11475076, and 11405077) and the Fundamental Research Funds for the Central Universities of China (Grants Nos. lzujbky-2016-29, lzujbky-2016-31, and lzujbky-2016-209).

Wavelength dependence of electron localization of H2+ and its isotopomers in the UV-pump-probe scheme

Shan Xue(薛山)1,2, Hong-Chuan Du(杜洪川)1,2, Sheng-Jun Yue(岳生俊)1,2, Hong-Mei Wu(吴红梅)1,2, Bi-Tao Hu(胡碧涛)1,2   

  1. 1 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
    2 Key Laboratory of Special Function Materials and Structure Design (Ministry of Education), Lanzhou University, Lanzhou 730000, China
  • Received:2016-10-02 Revised:2016-12-06 Online:2017-05-05 Published:2017-05-05
  • Contact: Hong-Chuan Du, Bi-Tao Hu E-mail:duhch@lzu.edu.cn;hubt@lzu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11404153, 11135002, 11475076, and 11405077) and the Fundamental Research Funds for the Central Universities of China (Grants Nos. lzujbky-2016-29, lzujbky-2016-31, and lzujbky-2016-209).

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摘要：

The wavelength dependence of electron localization of H2+ and its isotopomers in the ultraviolet pump-probe scheme is investigated by numerically solving the time-dependent Schrödinger equation. By combining with a semiclassical method, an effective analytical formula expressed in the adiabatic representation is established to describe the localization probability with several zero crossings. A stable zone with respect to the laser intensity and carrier envelope phase is found at a relatively long probe wavelength. Finally, the critical probe wavelengths to reach at the stable zone are derived by using the three-dimensional model. Slower nuclear motion of heavier isotopomers leads to a longer critical wavelength.

关键词: strong field physics, electron localization, molecular dissociation, pump-probe

Abstract:

The wavelength dependence of electron localization of H2+ and its isotopomers in the ultraviolet pump-probe scheme is investigated by numerically solving the time-dependent Schrödinger equation. By combining with a semiclassical method, an effective analytical formula expressed in the adiabatic representation is established to describe the localization probability with several zero crossings. A stable zone with respect to the laser intensity and carrier envelope phase is found at a relatively long probe wavelength. Finally, the critical probe wavelengths to reach at the stable zone are derived by using the three-dimensional model. Slower nuclear motion of heavier isotopomers leads to a longer critical wavelength.

Key words: strong field physics, electron localization, molecular dissociation, pump-probe

中图分类号:  (Pump probe studies of photodissociation)

  • 82.53.Eb
42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift) 33.80.Rv (Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))