中国物理B ›› 2016, Vol. 25 ›› Issue (5): 53202-053202.doi: 10.1088/1674-1056/25/5/053202

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Carrier envelope phase effect on the spatial distribution of high-order harmonic generation in asymmetric molecule

Jun Zhang(张军), Hai-Feng Liu(刘海凤), Xue-Fei Pan(潘雪飞), Hui Du(杜慧), Jing Guo(郭静), Xue-Shen Liu(刘学深)   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • 收稿日期:2015-12-21 修回日期:2016-12-13 出版日期:2016-05-05 发布日期:2016-05-05
  • 通讯作者: Xue-Shen Liu E-mail:liuxs@jlu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11271158, 11574117, and 61575077).

Carrier envelope phase effect on the spatial distribution of high-order harmonic generation in asymmetric molecule

Jun Zhang(张军), Hai-Feng Liu(刘海凤), Xue-Fei Pan(潘雪飞), Hui Du(杜慧), Jing Guo(郭静), Xue-Shen Liu(刘学深)   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • Received:2015-12-21 Revised:2016-12-13 Online:2016-05-05 Published:2016-05-05
  • Contact: Xue-Shen Liu E-mail:liuxs@jlu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11271158, 11574117, and 61575077).

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摘要：

The spatial distribution in high-order harmonic generation (HHG) from the asymmetric diatomic molecule HeH2+ is investigated by numerically solving the non-Born-Oppenheimer time-dependent Schrödinger equation (TDSE). The spatial distribution of the HHG spectra shows that there is little contribution in HHG around the geometric center of two nuclei (z = 1.17 a.u.) and the equilibrium internuclear position of the H nucleus (z = 3.11 a.u.). We demonstrate the carrier envelope phase (CEP) effect on the spatial distribution of HHG in a few-cycle laser pulse. The HHG process is investigated by the time evolution of the electronic density distribution. The time-frequency analysis of HHG from two nuclei in HeH2+ is presented to further explain the underlying physical mechanism.

关键词: high-order harmonic generation, spatial distribution, asymmetric molecule, carrier envelope phase

Abstract:

The spatial distribution in high-order harmonic generation (HHG) from the asymmetric diatomic molecule HeH2+ is investigated by numerically solving the non-Born-Oppenheimer time-dependent Schrödinger equation (TDSE). The spatial distribution of the HHG spectra shows that there is little contribution in HHG around the geometric center of two nuclei (z = 1.17 a.u.) and the equilibrium internuclear position of the H nucleus (z = 3.11 a.u.). We demonstrate the carrier envelope phase (CEP) effect on the spatial distribution of HHG in a few-cycle laser pulse. The HHG process is investigated by the time evolution of the electronic density distribution. The time-frequency analysis of HHG from two nuclei in HeH2+ is presented to further explain the underlying physical mechanism.

Key words: high-order harmonic generation, spatial distribution, asymmetric molecule, carrier envelope phase

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

  • 32.80.Rm
42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)