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题名: Wave packet theory of dynamic stimulated Raman spectra in femtosecond pump-probe spectroscopy
作者: Sun, Zhigang;  Jin, Zhongqi;  Lu, J.;  Zhang, Dong H.;  Lee, Soo Y.
通讯作者: 李仕仁
刊名: JOURNAL OF CHEMICAL PHYSICS
发表日期: 2007-05-07
DOI: 10.1063/1.2715593
卷: 126, 期:17, 页:174104-1-174104-10
收录类别: SCI
文章类型: Article
部门归属: 11
项目归属: 1102
产权排名: 3;4
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Physics
英文摘要: The quantum theory for stimulated Raman spectroscopy from a moving wave packet using the third-order density matrix and polarization is derived. The theory applies, in particular, to the new technique of femtosecond broadband stimulated Raman spectroscopy (FSRS). In the general case, a femtosecond actinic pump pulse first prepares a moving wave packet on an excited state surface which is then interrogated with a coupled pair of picosecond Raman pump pulse and a femtosecond Raman probe pulse and the Raman gain in the direction of the probe pulse is measured. It is shown that the third-order polarization in the time domain, whose Fourier transform governs the Raman gain, is given simply by the overlap of a first-order wave packet created by the Raman pump on the upper electronic state with a second-order wave packet on the initial electronic state that is created by the coupling of the Raman pump and probe fields acting on the molecule. Calculations are performed on model potentials to illustrate and interpret the FSRS spectra. (C) 2007 American Institute of Physics.
关键词[WOS]: ABSORPTION-SPECTRA ;  SCATTERING ;  PULSES ;  ISOMERIZATION ;  RESONANCE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000246284800006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99153
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.Nanyang Technol Univ, Sch Math & Phys Sci, Div Chem & Biol Chem, Singapore 637616, Singapore
2.Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Ctr Theoret & Computat Chem, Dalian 116023, Peoples R China

Recommended Citation:
Sun, Zhigang,Jin, Zhongqi,Lu, J.,et al. Wave packet theory of dynamic stimulated Raman spectra in femtosecond pump-probe spectroscopy[J]. JOURNAL OF CHEMICAL PHYSICS,2007,126(17):174104-1-174104-10.
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