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Femtosecond time‐resolved CARS and DFWM spectroscopy on gas‐phase I 2 : a wave‐packet description
Author(s) -
Meyer S.,
Engel V.
Publication year - 2000
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/(sici)1097-4555(200001/02)31:1/2<33::aid-jrs494>3.0.co;2-h
Subject(s) - wave packet , femtosecond , raman scattering , degenerate energy levels , four wave mixing , raman spectroscopy , chemistry , spectroscopy , polarization (electrochemistry) , coherent anti stokes raman spectroscopy , atomic physics , optics , molecular physics , physics , nonlinear optics , laser , quantum mechanics
Femtosecond time‐resolved CARS (coherent anti‐Stokes Raman scattering) and DFWM (degenerate four‐wave mixing) experiments on gas‐phase iodine molecules were analyzed within time dependent wave‐packet calculations. The recorded signals were interpreted using the ro‐vibrational quantum dynamics in different electronic states of I 2 . Thereby various contributions to the induced third‐order polarization were related to overlap integrals between wave packets created by absorption and emission processes. This allows for an intuitive interpretation of the temporal variations in the signals. Copyright © 2000 John Wiley & Sons, Ltd.