Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/102

Title

Spectrally resolved femtosecond nonlinear spectroscopy of vibrational coherence relaxation in molecules

Author(s)

Dao, Lap Van

Abstract

We investigate the potential of spectrally resolved femtosecond nonlinear spectroscopy for studying the dynamics of vibrational relaxation of molecules on a time scale of vibrational coherences in the specific case of the transient grating. Using a three-pulse two-colour spectrally resolved nonlinear technique we have carried out a detailed study of the dependence of the observed spectra on the wavelength of the excitation laser pulses for different dye molecules. The influence of molecular structure on the transfer of the coherence ensemble, which can be observed in the nonlinear spectrum and could be related to homogeneous and inhomogeneous broadening of molecular energy states, is discussed. The dynamics of dephasing and vibrational relaxation (80 fs/10 nm) can be deduced from the spectrally resolved measurement.

Publication type

Journal article

Research centre

Swinburne University of Technology. School of Biophysical Sciences and Electrical Engineering. Centre for Atom Optics and Ultrafast Spectroscopy

Source

Journal of luminescence, Vol. 106, no. 3/4 (Apr. 2004), pp. 243-252

Publication year

2004

Keyword(s)

Rhodamine;  Photon echo;  Time-resolved spectroscopy;  Transient grating

Publisher

Elsevier

Format

pp. 243-252

ISSN

0022-2313

Publisher URL

Journal of luminescence

Publisher URL

http://dx.doi.org/10.1016/j.jlumin.2003.10.006

Copyright

Copyright © 2003 Elsevier B.V. All rights reserved.

Peer reviewed