Vibrational wave packet induced oscillations in two-dimensional electronic spectra. I. Experiments

Autor(en)

Alexandra Nemeth, Franz Milota, Tomas Mancal, Vladimir Lukes, Jürgen Hauer, Harald Kauffmann, Jaroslaw Sperling

Abstrakt

This is the first in a series of two papers investigating the effect of electron-phonon coupling in two-dimensional Fourier transformed electronic spectroscopy. We present a series of one- and two-dimensional nonlinear spectroscopic techniques for studying a dye molecule in solution. Ultrafast laser pulse excitation of an electronic transition coupled to vibrational modes induces a propagating vibrational wave packet that manifests itself in oscillating signal intensities and line shapes. For the two-dimensional electronic spectra we can attribute the observed modulations to periodic enhancement and decrement of the relative amplitudes of rephasing and nonrephasing contributions to the total response. Different metrics of the two-dimensional signals are shown to relate to the frequency-frequency correlation function which provides the connection between experimentally accessible observations and the underlying microscopic molecular dynamics. A detailed theory of the time-dependent two-dimensional spectral line shapes is presented in the accompanying paper [T. Manccal , J. Chem. Phys. 132, 184515 (2010)].

Organisation(en)

Institut für Physikalische Chemie, Elektronische Materialeigenschaften

Externe Organisation(en)

Charles University Prague, Slovak University of Technology in Bratislava, Newport Spectra-Physics Gmbh

Journal

Journal of Chemical Physics

Band

132

ISSN

0021-9606

DOI

https://doi.org/10.1063/1.3404404

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103015 Kondensierte Materie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/d64075b8-aa7c-4ba8-a8eb-43283feb9c71