FEMTOSECOND TIME-RESOLVED 4-WAVE-MIXING SPECTROSCOPY IN IODINE VAPOR

Citation
M. Schmitt et al., FEMTOSECOND TIME-RESOLVED 4-WAVE-MIXING SPECTROSCOPY IN IODINE VAPOR, Chemical physics letters, 280(3-4), 1997, pp. 339-347
Citations number
24
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
ISSN journal
00092614
Volume
280
Issue
3-4
Year of publication
1997
Pages
339 - 347
Database
ISI
SICI code
0009-2614(1997)280:3-4<339:FT4SII>2.0.ZU;2-#
Abstract
Femtosecond time-resolved four-wave mixing (FWM) spectroscopy is perfo rmed using degenerate laser frequencies in order to investigate molecu lar dynamics in iodine molecules in the gas phase. It is demonstrated that by varying the timing as well as the wavenumber position for the signal detection different dynamics can be accessed. This is due to a selection of contributions (e.g. described by Feynman diagrams) to the nonlinear polarization of the process. The wave packet dynamics of th e electronic excited B as well as the X ground state of iodine can be monitored by degenerate FWM, coherent anti-Stokes Raman scattering or coherent Stokes Raman scattering (CSRS) processes all included in the same experiment. (C) 1997 Elsevier Science B.V.