Ellipticity-dependent ionization/dissociation of carbon dioxide in strong laser fields

doi:10.1088/1674-1056/24/3/033302

中国物理B ›› 2015, Vol. 24 ›› Issue (3): 33302-033302.doi: 10.1088/1674-1056/24/3/033302

Ellipticity-dependent ionization/dissociation of carbon dioxide in strong laser fields

张军峰^{a b}, 马日^{a b}, 左万龙^{a b}, 吕航^{a b}, 黄红卫^{a b}, 徐海峰^{a b}, 金明星^{a b}, 丁大军^{a b}

a Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
b Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China

收稿日期:2014-09-23 修回日期:2014-10-16 出版日期:2015-03-05 发布日期:2015-03-05
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2013CB922200) and the National Natural Science Foundation of China (Grant Nos. 11034003 and 11274140).

Ellipticity-dependent ionization/dissociation of carbon dioxide in strong laser fields

Zhang Jun-Feng (张军峰)^{a b}, Ma Ri (马日)^{a b}, Zuo Wan-Long (左万龙)^{a b}, Lv Hang (吕航)^{a b}, Huang Hong-Wei (黄红卫)^{a b}, Xu Hai-Feng (徐海峰)^{a b}, Jin Ming-Xing (金明星)^{a b}, Ding Da-Jun (丁大军)^ab

a Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
b Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China

Received:2014-09-23 Revised:2014-10-16 Online:2015-03-05 Published:2015-03-05
Contact: Xu Hai-Feng E-mail:xuhf@jlu.edu.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2013CB922200) and the National Natural Science Foundation of China (Grant Nos. 11034003 and 11274140).

摘要/Abstract

摘要：

Ionization and dissociation of linear triatomic molecules, carbon dioxide, are studied in 50-fs 800-nm strong laser fields using time-of-flight mass spectrometer. The yields of double charged ions CO₂²⁺ and various fragment ions (CO⁺, Oⁿ⁺, and Cⁿ⁺ (n=1, 2)) are measured as a function of ellipticity of laser polarization in the intensity range from 5.0× 10¹³ W/cm² to 6.0× 10¹⁴ W/cm². The results demonstrate that non-sequential double ionization, which is induced by laser-driven electron recollision, dominates double ionization of CO₂ in the strong IR laser field with intensity lower than 2.0×10¹⁴ W/cm². The electron recollision could also have contribution in strong-field multiple ionization and formation of fragments of CO₂ molecules. The present study indicates that the intensity and ellipticity dependence of ions yields can be used to probe the complex dynamics of strong-field ionization/dissociation of polyatomic molecules.

关键词: laser ellipticity, strong field, ionization and dissociation, carbon dioxide

Abstract:

Key words: laser ellipticity, strong field, ionization and dissociation, carbon dioxide

中图分类号: (Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))

33.80.Rv

张军峰, 马日, 左万龙, 吕航, 黄红卫, 徐海峰, 金明星, 丁大军. Ellipticity-dependent ionization/dissociation of carbon dioxide in strong laser fields[J]. 中国物理B, 2015, 24(3): 33302-033302.

Zhang Jun-Feng (张军峰), Ma Ri (马日), Zuo Wan-Long (左万龙), Lv Hang (吕航), Huang Hong-Wei (黄红卫), Xu Hai-Feng (徐海峰), Jin Ming-Xing (金明星), Ding Da-Jun (丁大军). Ellipticity-dependent ionization/dissociation of carbon dioxide in strong laser fields[J]. Chin. Phys. B, 2015, 24(3): 33302-033302.

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Ellipticity-dependent ionization/dissociation of carbon dioxide in strong laser fields

Ellipticity-dependent ionization/dissociation of carbon dioxide in strong laser fields

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