Imaging alignment of rotational state-selected CH3I molecule

doi:10.1088/1674-1056/28/2/023101

中国物理B ›› 2019, Vol. 28 ›› Issue (2): 23101-023101.doi: 10.1088/1674-1056/28/2/023101

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Imaging alignment of rotational state-selected CH₃I molecule

Le-Le Song(宋乐乐), Yan-Hui Wang(王艳辉), Xiao-Chun Wang(王晓春), Hong-Tao Sun(孙洪涛), Lan-Hai He(赫兰海), Si-Zuo Luo(罗嗣佐), Wen-Hui Hu(胡文惠), Dong-Xu Li(李东旭), Wen-Hui Zhu(朱文会), Ya-Nan Sun(孙亚楠), Da-Jun Ding(丁大军), Fu-Chun Liu(刘福春)

1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
2 Jilin Institute of Chemical Technology, Jilin 132022, China;
3 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China;
4 College of Electronic Science and Engineering, State Key Laboratory on Integrated Optoelectronics, Jilin University, Changchun 130012, China;
5 General Hospital of FAW, Changchun 130011, China

收稿日期:2018-07-27 修回日期:2018-11-07 出版日期:2019-02-05 发布日期:2019-02-05
通讯作者: Fu-Chun Liu E-mail:lfc@jlu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11574116, 11534004, 10704028, and 11474123) and the Natural Science Foundation of Jilin Province, China (Grant No. 20170101154JC).

Imaging alignment of rotational state-selected CH₃I molecule

Le-Le Song(宋乐乐)^1,2,3, Yan-Hui Wang(王艳辉)⁴, Xiao-Chun Wang(王晓春)^1,3, Hong-Tao Sun(孙洪涛)^1,3,5, Lan-Hai He(赫兰海)^1,3, Si-Zuo Luo(罗嗣佐)^1,3, Wen-Hui Hu(胡文惠)^1,3, Dong-Xu Li(李东旭)^1,3, Wen-Hui Zhu(朱文会)^1,3, Ya-Nan Sun(孙亚楠)^1,3, Da-Jun Ding(丁大军)^1,3, Fu-Chun Liu(刘福春)^1,3

1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
2 Jilin Institute of Chemical Technology, Jilin 132022, China;
3 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China;
4 College of Electronic Science and Engineering, State Key Laboratory on Integrated Optoelectronics, Jilin University, Changchun 130012, China;
5 General Hospital of FAW, Changchun 130011, China

Received:2018-07-27 Revised:2018-11-07 Online:2019-02-05 Published:2019-02-05
Contact: Fu-Chun Liu E-mail:lfc@jlu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11574116, 11534004, 10704028, and 11474123) and the Natural Science Foundation of Jilin Province, China (Grant No. 20170101154JC).

摘要/Abstract

摘要： We experimentally and numerically investigate CH₃I molecular alignment by using a femtosecond laser and a hexapole. The hexapole provides the |111> rotational state condition at 4.5-kV hexapole rod voltage. Based on this single rotational state, an enhanced alignment degree of 0.73 is achieved. Our experimental results are in agreement with the simulation results. We experimentally obtain the ion velocity map images and show the influence of the initial rotational-state population. With the I⁺ ion images and angular distributions at different pump-probe delay time, the alignment and anti-alignment phenomena are further demonstrated. The molecules will be under field-free conditions when the laser effect disappears completely at the full revival time. Our work shows that the quantum control and spatial control on CH₃I molecules can be realized and molecular coordinate frame can be obtained for further molecular experiment.

关键词: hexapole, state selection, velocity map imaging, alignment

Abstract: We experimentally and numerically investigate CH₃I molecular alignment by using a femtosecond laser and a hexapole. The hexapole provides the |111> rotational state condition at 4.5-kV hexapole rod voltage. Based on this single rotational state, an enhanced alignment degree of 0.73 is achieved. Our experimental results are in agreement with the simulation results. We experimentally obtain the ion velocity map images and show the influence of the initial rotational-state population. With the I⁺ ion images and angular distributions at different pump-probe delay time, the alignment and anti-alignment phenomena are further demonstrated. The molecules will be under field-free conditions when the laser effect disappears completely at the full revival time. Our work shows that the quantum control and spatial control on CH₃I molecules can be realized and molecular coordinate frame can be obtained for further molecular experiment.

Key words: hexapole, state selection, velocity map imaging, alignment

中图分类号: (Relativistic configuration interaction (CI) and many-body perturbation calculations)

31.15.am

31.15.ap (Polarizabilities and other atomic and molecular properties) 33.15.Mt (Rotation, vibration, and vibration-rotation constants) 33.15.Kr (Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility)

宋乐乐, 王艳辉, 王晓春, 孙洪涛, 赫兰海, 罗嗣佐, 胡文惠, 李东旭, 朱文会, 孙亚楠, 丁大军, 刘福春. Imaging alignment of rotational state-selected CH₃I molecule[J]. 中国物理B, 2019, 28(2): 23101-023101.

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Imaging alignment of rotational state-selected CH₃I molecule

Imaging alignment of rotational state-selected CH₃I molecule

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