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Special Issue:
SPECIAL TOPIC — Ultrafast physics in atomic, molecular and optical systems
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| SPECIAL TOPIC — Ultrafast physics in atomic, molecular and optical systems |
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Theoretical study of the light-induced conical intersection in the photodissociation of molecule OH |
| Jinqian Liu(刘金倩)1,2, Jialong Li(李嘉隆)1,2, Dongdong Zhang(张栋栋)1,2,†, and Dajun Ding(丁大军)1,2,‡ |
1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
2 Jilin Key Laboratory of Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China |
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Abstract Light-induced conical intersections (LICIs) present a distinctive mechanism for nonadiabatic coupling, thereby facilitating ultrafast chemical reactions, including the indirect photodissociation of diatomic molecules. In contrast to static conical intersections, LICIs are dynamically tunable, providing a pathway for precise control of molecular dissociation. In this study, we employ the time-dependent quantum wave packet method to investigate the dissociation dynamics of the OH molecule, focusing on its ground state X$^{2}\Pi$ and repulsive state 1$^{2}\Sigma^{-}$. By varying laser field parameters (intensity, full width at half maximum (FWHM), and wavelength), we elucidate how nonadiabatic coupling governs selective dissociation channel control. Our findings reveal that the choice of initial vibrational states and the tailoring of laser conditions significantly influence dissociation pathways, providing theoretical insights into manipulating molecular dynamics via LICIs. These results provide a foundation for future experimental studies and the development of advanced molecular control techniques.
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Received: 01 March 2025
Revised: 23 April 2025
Accepted manuscript online: 23 May 2025
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PACS:
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31.15.xv
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(Molecular dynamics and other numerical methods)
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| Fund: We thank Prof. Chuancun Shu for sharing his code with us. This project was supported by the National Natural Science Foundation of China (Grant Nos. 12134005 and 12334011) and the Major Research Plan of the National Natural Science Foundation of China (Grant No. 92461301). |
Corresponding Authors:
Dongdong Zhang, Dajun Ding
E-mail: dongdongzhang@jlu.edu.cn;dajund@jlu.edu.cn
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Cite this article:
Jinqian Liu(刘金倩), Jialong Li(李嘉隆), Dongdong Zhang(张栋栋), and Dajun Ding(丁大军) Theoretical study of the light-induced conical intersection in the photodissociation of molecule OH 2025 Chin. Phys. B 34 103101
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