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题名: Molecular photoelectron spectrum in ultrashort laser fields: Autler-Townes splitting under rotational and aligned effects
作者: Yuan, Kai-Jun;  Sun, Zhigang;  Cong, Shu-Lin;  Lou, Nanquan
刊名: PHYSICAL REVIEW A
发表日期: 2006-10-01
DOI: 10.1103/PhysRevA.74.043421
卷: 74, 期:4
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Optics ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Optics ;  Physics
英文摘要: The molecular dynamics of Autler-Townes (AT) splitting in a multiphoton resonance ionization spectrum is numerically simulated using the time-dependent wave packet method for a rotating Na-2 molecule with a linearly polarized laser pulse. Employing the Fourier grid method and Legendre polynomials as basis functions, the initial wave packet is directly propagated using the split operator method. Wave packet dynamics simulations demonstrate that the AT splitting results from rapid Rabi oscillations induced by an ultrashort intense laser pulse in rovibrational coherent states that belong to different electronic terms. But Rabi oscillations will be damped because of the effects of rotation and alignment of the molecule in laser fields. The AT splitting in a photoelectron spectrum could be observed for a well-aligned molecule with sufficiently rapid Rabi oscillations. Only an adequately short laser pulse can induce AT splitting in a photoelectron spectrum. The effect of initial rotational temperature on the molecular dynamics is also studied.
关键词[WOS]: WAVE-PACKET DYNAMICS ;  ELECTRONIC STATES ;  MULTIPHOTON IONIZATION ;  ANGULAR-DISTRIBUTIONS ;  DISSOCIATION DYNAMICS ;  SCHRODINGER-EQUATION ;  TRIATOMIC-MOLECULES ;  POPULATION TRANSFER ;  DIATOMIC-MOLECULES ;  RABI OSCILLATIONS
语种: 英语
WOS记录号: WOS:000241723100134
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140010
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, Dept Phys, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol Rect Dynam, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Ctr Theoret & Computat Chem, Dalian 116023, Peoples R China

Recommended Citation:
Yuan, Kai-Jun,Sun, Zhigang,Cong, Shu-Lin,et al. Molecular photoelectron spectrum in ultrashort laser fields: Autler-Townes splitting under rotational and aligned effects[J]. PHYSICAL REVIEW A,2006,74(4).
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