中国物理B ›› 2019, Vol. 28 ›› Issue (9): 93201-093201.doi: 10.1088/1674-1056/ab33f3

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Coherent control of fragmentation of methyl iodide by shaped femtosecond pulse train

Qiu-Nan Tong(佟秋男), De-Hou Fei(费德厚), Zhen-Zhong Lian(廉振中), Hong-Xia Qi(齐洪霞), Sheng-Peng Zhou(周胜鹏), Si-Zuo Luo(罗嗣佐), Zhou Chen(陈洲), Zhan Hu(胡湛)   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 Advanced Light Field and Modern Medical Treatment Science and Technology Innovation Center of Jilin Province, Jilin University, Changchun 130012, China
  • 收稿日期:2019-04-30 修回日期:2019-06-25 出版日期:2019-09-05 发布日期:2019-09-05
  • 通讯作者: Zhou Chen, Zhou Chen E-mail:phy_cz@jlu.edu.cn;huzhan@jlu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 11374124).

Coherent control of fragmentation of methyl iodide by shaped femtosecond pulse train

Qiu-Nan Tong(佟秋男)1,2, De-Hou Fei(费德厚)1,2, Zhen-Zhong Lian(廉振中)1,2, Hong-Xia Qi(齐洪霞)1,2, Sheng-Peng Zhou(周胜鹏)1, Si-Zuo Luo(罗嗣佐)1, Zhou Chen(陈洲)1,2, Zhan Hu(胡湛)1,2   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 Advanced Light Field and Modern Medical Treatment Science and Technology Innovation Center of Jilin Province, Jilin University, Changchun 130012, China
  • Received:2019-04-30 Revised:2019-06-25 Online:2019-09-05 Published:2019-09-05
  • Contact: Zhou Chen, Zhou Chen E-mail:phy_cz@jlu.edu.cn;huzhan@jlu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 11374124).

摘要:

Coherent control of fragmentation of CH3I using shaped femtosecond pulse train is investigated. The dissociation processes can be modulated by changing the separation of the shaped pulse train, and the yield of I+ under the irradiation of the optimal pulse is significantly increased compared with that using the transform-limited pulse. We discuss the control mechanism of dissociation processes with coherent interference in time domain. A three-pulse control model is proposed to explain the counterintuitive experimental results.

关键词: coherent control, fragmentation, shaped pulse

Abstract:

Coherent control of fragmentation of CH3I using shaped femtosecond pulse train is investigated. The dissociation processes can be modulated by changing the separation of the shaped pulse train, and the yield of I+ under the irradiation of the optimal pulse is significantly increased compared with that using the transform-limited pulse. We discuss the control mechanism of dissociation processes with coherent interference in time domain. A three-pulse control model is proposed to explain the counterintuitive experimental results.

Key words: coherent control, fragmentation, shaped pulse

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

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