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Effects of intermolecular vibronic dephasings on time-resolved sum-frequency generation from molecules at an interface

Authors
Journal
Chemical Physics Letters
0009-2614
Publisher
Elsevier
Publication Date
Volume
194
Identifiers
DOI: 10.1016/0009-2614(92)86069-t

Abstract

Abstract Effects of intermolecular vibronic dephasings on time-resolved sum-frequency generation (SFG) from molecules at an interface are theoretically studied by using the perturbative density matrix method with the aid of the Liouville-space Feynman diagram. Intermolecular coherence created at the interface is lost due to intermolecular vibronic dephasings. A nonexponential time dependence of the SFG time profile is predicted as a result of intermolecular distance dependence of the dephasing.

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