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research article

Three pulse UV photon echo studies of molecules in solution: Effect of the chirp

Oskouei, A. Ajdarzadeh  
•
Tortschanoff, A.  
•
Braem, O.  
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2010
Journal Of Chemical Physics

We report on the electronic dephasing times of the nonpolar chromophore diphenylacetylene (DPA) in ethanol and in cyclohexane (polar and nonpolar solvents respectively) by photon echo measurements in the ultraviolet. Contrary to previous reports, we observed sub-100-fs electronic dephasing times for DPA in both solvents. We identify fast dynamics of tau=40 +/- 10 fs on the photon echo peak shift (PEPS) traces of DPA in ethanol. In addition, we observed a dependence of the PEPS asymptotic value on the temporal chirp of the pulses. We propose a model to describe it in terms of phase-matching condition and beam geometry. (C) 2010 American Institute of Physics. [doi:10.1063/1.3463448]

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Type
research article
DOI
10.1063/1.3463448
Web of Science ID

WOS:000280941800023

Author(s)
Oskouei, A. Ajdarzadeh  
•
Tortschanoff, A.  
•
Braem, O.  
•
van Mourik, F.  
•
Cannizzo, A.  
•
Chergui, M.  
Date Issued

2010

Publisher

American Institute of Physics

Published in
Journal Of Chemical Physics
Volume

133

Issue

6

Article Number

064506

Subjects

chirp modulation

•

high-speed optical techniques

•

molecule-photon collisions

•

organic compounds

•

photon echo

•

ultraviolet spectra

•

Polar Solvation Dynamics

•

Excited-State Dynamics

•

Peak Shift

•

Femtosecond Fluorescence

•

Room-Temperature

•

Schiff-Base

•

Spectroscopy

•

Proteins

•

Heterogeneity

•

Tryptophan

Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
LSU  
Available on Infoscience
October 4, 2010
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/54801
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