Population Redistribution Among Multiple Electronic States of Molecular Nitrogen Ions in Strong Laser Fields

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 强场激光物理国家重点实验室

	Population Redistribution Among Multiple Electronic States of Molecular Nitrogen Ions in Strong Laser Fields
	Jiang, Shicheng; Chu, Wei; Zeng, Bin; Wu, Chengyin; Yao, Jinping; Lu, Ruifeng; Xie, Hongqiang; Li, Guihua; Yu, Chao; Wang, Zhanshan
刊名	Phys. Rev. Lett.
	2016
卷号	116 期号:14
通讯作者	cywu@pku.edu.cn ; rflu@njust.edu.cn ; ya.cheng@siom.ac.cn
英文摘要	We carry out a combined theoretical and experimental investigation on the population distributions in the ground and excited states of tunnel-ionized nitrogen molecules at various driver wavelengths in the near- and midinfrared range. Our results reveal that efficient couplings (i.e., population exchanges) between the ground N-2(+)(X-2 Sigma(+)(g)) state and the excited N-2(+)(A(2)Pi(u)) and N-2(+)(B-2 Sigma(+)(u)) states occur in strong laser fields. The couplings result in a population inversion between the N-2(+)(X-2 Sigma(+)(g)) and N-2(+)(B-2 Sigma(+)(u)) states at wavelengths near 800 nm, which is verified by our experimental observation of the amplification of a seed at similar to 391 nm. The result provides insight into the mechanism of free-space nitrogen ion lasers generated in remote air with strong femtosecond laser pulses.
收录类别	SCI
资助信息	National Basic Research Program of China [2013CB922403, 2014CB921303]; National Natural Science Foundation of China [11134010, 61590934, 21373113, 11474009, 11434002, 61575211, 11304330, 11404357]
WOS记录号	WOS:000373587800007
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/27704]
专题	上海光学精密机械研究所_强场激光物理国家重点实验室
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	Jiang, Shicheng,Chu, Wei,Zeng, Bin,et al. Population Redistribution Among Multiple Electronic States of Molecular Nitrogen Ions in Strong Laser Fields[J]. Phys. Rev. Lett.,2016,116(14).
APA	Jiang, Shicheng.,Chu, Wei.,Zeng, Bin.,Wu, Chengyin.,Yao, Jinping.,...&Li, Ziting.(2016).Population Redistribution Among Multiple Electronic States of Molecular Nitrogen Ions in Strong Laser Fields.Phys. Rev. Lett.,116(14).
MLA	Jiang, Shicheng,et al."Population Redistribution Among Multiple Electronic States of Molecular Nitrogen Ions in Strong Laser Fields".Phys. Rev. Lett. 116.14(2016).