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Femtosecond CARS of methanol–water mixtures
Author(s) -
Pestov Dmitry,
Zhi Miaochan,
Sariyanni ZoeElizabeth,
Kalugin Nikolai G.,
Kolomenskii Alexander,
Murawski Robert,
Rostovtsev Yuri V.,
Sautenkov Vladimir A.,
Sokolov Alexei V.,
Scully Marlan O.
Publication year - 2006
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1482
Subject(s) - raman spectroscopy , methanol , femtosecond , coherence (philosophical gambling strategy) , chemistry , analytical chemistry (journal) , coherent anti stokes raman spectroscopy , chemical physics , optics , laser , raman scattering , chromatography , organic chemistry , physics , quantum mechanics
We utilize femtosecond time‐resolved coherent anti‐Stokes Raman spectroscopy (CARS) to study the vibrational dynamics of methanol–water solutions. We measure the beat wavenumbers between Raman modes and coherence decay rates of CH stretch modes (at 2835 cm −1 and 2943 cm −1 ) in methanol. We observe a qualitative dependence of the coherence relaxation rate on the concentration of methanol in its water solution. This may be linked to the formation of the recently observed supramolecular structures in methanol–water mixtures. Copyright © 2006 John Wiley & Sons, Ltd.