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Titolo:
STRONG-FIELD APPROACH TO ULTRAFAST PUMP-PROBE SPECTRA - DYE MOLECULESIN SOLUTION
Autore:
SCHIRRMEISTER DH; MAY V;
Indirizzi:
HUMBOLDT UNIV BERLIN,INST PHYS,HAUSVOGTEIPL 5-7 D-10117 BERLIN GERMANY
Titolo Testata:
Chemical physics
fascicolo: 1-2, volume: 220, anno: 1997,
pagine: 1 - 13
SICI:
0301-0104(1997)220:1-2<1:SATUPS>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
VIBRONICALLY COUPLED SYSTEMS; COHERENT VIBRATIONAL MOTION; IMPULSIVE EXCITATION; SPECTROSCOPY; DYNAMICS; PHOTOISOMERIZATION; BACTERIORHODOPSIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
D.H. Schirrmeister e V. May, "STRONG-FIELD APPROACH TO ULTRAFAST PUMP-PROBE SPECTRA - DYE MOLECULESIN SOLUTION", Chemical physics, 220(1-2), 1997, pp. 1-13

Abstract

The ultrafast dissipative dynamics of molecular vibrations under the influence of strong laser pulses is studied in the framework of the density matrix theory. To circumvent any perturbational treatment of themolecule-radiation coupling the related equations of motion are solved directly with the inclusion of the light field. The theory is applied to the simulation of 20 fs two-color pump-probe experiments on the laser-dye IR125 [S.H. Ashworth, T. Hasche, M. Woemer, E. Riedle and T. Elsaesser, J. Chem. Phys. 104 (1996) 5761]. It can be demonstrated that a three-level model of a S-0, a S-1, and a higher excited S-n state completed by a single vibrational coordinate is sufficient to calculate the measured spectra. The main features of the spectra can be explained by the formation of a dynamical hole in the vibrational wave function of the electronic ground state. Its spatio-temporal oscillation and its dependence on the pump intensity is studied in detail. (C) 1997 Published by Elsevier Science B.V.

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Documento generato il 25/11/20 alle ore 04:47:49