High-order harmonic generation of CO2 with different vibrational modes in an intense laser field

doi:10.1088/1674-1056/25/11/113201

中国物理B ›› 2016, Vol. 25 ›› Issue (11): 113201-113201.doi: 10.1088/1674-1056/25/11/113201

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

High-order harmonic generation of CO₂ with different vibrational modes in an intense laser field

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

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China

收稿日期:2016-06-23 修回日期:2016-07-18 出版日期:2016-11-05 发布日期:2016-11-05
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. 61575077, 11271158, and 11574117).

High-order harmonic generation of CO₂ with different vibrational modes in an intense laser field

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

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China

Received:2016-06-23 Revised:2016-07-18 Online:2016-11-05 Published:2016-11-05
Contact: Xue-Shen Liu E-mail:liuxs@jlu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61575077, 11271158, and 11574117).

摘要/Abstract

摘要：

We apply the strong-field Lewenstein model to demonstrate the high-order harmonic generation of CO₂ with three vibrational modes (balance vibration, bending vibration, and stretching vibration) driven by an intense laser field. The results show that the intensity of harmonic spectra is sensitive to molecular vibrational modes, and the high harmonic efficiency with stretching vibrational mode is the strongest. The underlying physical mechanism of the harmonic emission can be well explained by the corresponding ionization yield and the time-frequency analysis. Finally, we demonstrate the attosecond pulse generation with different vibrational modes and an isolated attosecond pulse with a duration of about 112 as is generated.

关键词: high-order harmonic generation, balance vibration, bending vibration, stretching vibration, isolated attosecond pulse

Abstract:

Key words: high-order harmonic generation, balance vibration, bending vibration, stretching vibration, isolated attosecond pulse

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)

杜慧, 张宏丹, 张军, 刘海凤, 潘雪飞, 郭静, 刘学深. High-order harmonic generation of CO₂ with different vibrational modes in an intense laser field[J]. 中国物理B, 2016, 25(11): 113201-113201.

Hui Du(杜慧), Hong-Dan Zhang(张宏丹), Jun Zhang(张军), Hai-Feng Liu(刘海凤), Xue-Fei Pan(潘雪飞), Jing Guo(郭静), Xue-Shen Liu(刘学深). High-order harmonic generation of CO₂ with different vibrational modes in an intense laser field[J]. Chin. Phys. B, 2016, 25(11): 113201-113201.

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High-order harmonic generation of CO₂ with different vibrational modes in an intense laser field

High-order harmonic generation of CO₂ with different vibrational modes in an intense laser field

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