Effect of two-center interference on molecular ionization in multiphoton ionization regime

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 > 量子光学重点实验室

	Effect of two-center interference on molecular ionization in multiphoton ionization regime
	Han, Shensheng; Chen, Jing; Hu, Shilin; Hao, Xiaolei; Guo, Li; Li, Weidong
刊名	Opt. Express
	2017
卷号	25 期号:19 页码:23082
通讯作者	chen_jing@iapcm.ac.cn ; guoli_2006@163.com
英文摘要	Using solution of the full three-dimensional time-dependent Schrodinger equation (TDSE) in prolate spheroidal coordinates, we investigate the orientation dependence of ionization of H-2(+) in near-infrared laser fields. It is found that, the ionization probability decreases as a function of the alignment angle in tunneling ionization regime, while it ascends with the increase of orientation angle in multiphoton ionization regime for the internuclear distance R=2 a.u. Furthermore, the result obtained by the length gauge strong-field approximation theory is in qualitative agreement with that calculated by the TDSE but the radiation gauge strong-field approximation and molecular ADK theories fail to reproduce the TDSE result. Analysis indicates that the above intriguing feature can be ascribed to the interference between the partial electron wave packets emitted from different molecular cores, which becomes evident at low laser intensity due to increased width of the initial mechanical momentum of the photoelectron at ionization moment. In addition, when the internuclear distance increases to R=4 a. u., the ionization yields decrease vs alignment angle in both tunneling and multiphoton regimes since the electron wavefunction of the 1 sigma(g) orbit is more concentrated in the molecular axis than that of R=2 a.u.
收录类别	SCI
资助信息	National Key program for Science and Technology Research and Development [2016YFA0401100]; National Basic Research Program of China [2013CB922201]; National Natural Science Foundation of China [11304329, 11334009, 11425414, 11374197, 11447114, 11504215]
WOS记录号	WOS:000411584600080
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/27776]
专题	上海光学精密机械研究所_量子光学重点实验室
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	Han, Shensheng,Chen, Jing,Hu, Shilin,et al. Effect of two-center interference on molecular ionization in multiphoton ionization regime[J]. Opt. Express,2017,25(19):23082.
APA	Han, Shensheng,Chen, Jing,Hu, Shilin,Hao, Xiaolei,Guo, Li,&Li, Weidong.(2017).Effect of two-center interference on molecular ionization in multiphoton ionization regime.Opt. Express,25(19),23082.
MLA	Han, Shensheng,et al."Effect of two-center interference on molecular ionization in multiphoton ionization regime".Opt. Express 25.19(2017):23082.