Coherent picosecond vibron polaritons as probes of vibrational lifetimes

被引:13
作者
Bonn, M [1 ]
Woutersen, S [1 ]
Bakker, HJ [1 ]
机构
[1] FOM, Inst Atom & Mol Phys, NL-1098 SJ Amsterdam, Netherlands
关键词
polarization; coherence; polariton; vibration; lifetime; infrared;
D O I
10.1016/S0030-4018(97)00601-9
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Picosecond pump-probe experiments on the C-O stretch vibration of acetic acid in solution with infrared pulses from a free-electron laser are presented. We show that under typical experimental conditions of pulses that are short compared to the inverse absorption linewidth and optically thick samples (necessary to observe significant transmission changes), the experimental pump-probe data are strongly influenced by pulse propagation effects (vibron polaritons) and coherent coupling between pump and probe vibron polaritons. To extract the vibrational lifetime fi om the data, it is therefore necessary to perform a full simulation of the propagation and coupling effects. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:138 / 142
页数:5
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