標題: Chirped modulation of molecular vibration in quinoidal thiophene after sub-5 fs excitation
作者: Wang, Zhuan
Otsubo, Tetsuo
Kobayashi, Takayoshi
電子物理學系
Department of Electrophysics
公開日期: 19-Oct-2006
摘要: Fourier transformation of the real-time trace of sub-5 fs pump-induced molecular vibration in quinoidal thiophene in solution revealed coupled modes to the electronic excitation at 206, 447, and 1466 cm(-1). Spectrogram analysis of 1466 cm(-1) (C=C stretching) mode showed that the amplitude and frequency of the mode are modulated with another low-frequency mode at about 220 cm(-1), which is down chirped being induced by the coupling with modes of even lower frequency, resulting in the irreversible relaxation due to high mode density in the low-frequency range. This Letter thus reports on observation of the modulation of vibrational frequency with a chirped frequency. (c) 2006 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.cplett.2006.08.106
http://hdl.handle.net/11536/11663
ISSN: 0009-2614
DOI: 10.1016/j.cplett.2006.08.106
期刊: CHEMICAL PHYSICS LETTERS
Volume: 430
Issue: 1-3
起始頁: 45
結束頁: 50
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