標題: Puzzling spectral structures of molecular vibration observed in ultrafast pump-probe experiment of transparent material
作者: Ozawa, A.
Kobayashi, T.
交大名義發表
National Chiao Tung University
公開日期: 6-Aug-2009
摘要: A sub-5-fs ultrafast pump-probe experiment was applied to neat liquid tetrahydrofuran (THF). The observed periodic modulation of transmittance change (Delta T), similar to 5 x 10(-3), is assigned to the ground-state vibrational mode of C-H stretching. Although the sample has no stationary absorption in the wavelength region under study, the modulation amplitude shows strong dependence on the probe photon energy. A model is proposed to explain this feature based on the coherent Raman coupling between the fundamental and Stokes-shifted spectral components. The results demonstrate that a special attention is required in distinguishing the ground-and excited-state vibrational signals in ultrafast transient absorption spectroscopy. (C) 2009 Elsevier B. V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.cplett.2009.06.098
http://hdl.handle.net/11536/6828
ISSN: 0009-2614
DOI: 10.1016/j.cplett.2009.06.098
期刊: CHEMICAL PHYSICS LETTERS
Volume: 477
Issue: 4-6
起始頁: 281
結束頁: 284
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