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Appearance of coherent artifact signals in femtosecond transient absorption spectroscopy in dependence on detector design

Dietzek, Benjamin LU ; Pascher, Torbjörn LU ; Sundström, Villy LU and Yartsev, Arkady LU (2007) In Laser Physics Letters 4(1). p.38-43
Abstract
The appearance of coherent artifact signals in transient absorption spectroscopy employing a spectrally integrated detection system is studied. The influence of the detection design on the shape of the observed signal is detailed and the experimentally very important case, in which the shape of the coherent artifact is strongly influenced by the presence of the sample itself, is considered - leading to the situation that the artifact signal cannot be accounted for by simple comparison of the kinetics obtained for the solvent only. Finally an estimate of the relative contribution of the artifact to the overall transient absorption change is presented facilitating the interpretation of short time transients in the presence of artifact... (More)
The appearance of coherent artifact signals in transient absorption spectroscopy employing a spectrally integrated detection system is studied. The influence of the detection design on the shape of the observed signal is detailed and the experimentally very important case, in which the shape of the coherent artifact is strongly influenced by the presence of the sample itself, is considered - leading to the situation that the artifact signal cannot be accounted for by simple comparison of the kinetics obtained for the solvent only. Finally an estimate of the relative contribution of the artifact to the overall transient absorption change is presented facilitating the interpretation of short time transients in the presence of artifact contributions and allowing to estimate the excited state absorption cross-section for a known pump-intensity dependence of the artifact signal. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
detector design, artifact, coherent, non-linear optics, ultrafast spectroscopy, pulse propagation
in
Laser Physics Letters
volume
4
issue
1
pages
38 - 43
publisher
John Wiley & Sons
external identifiers
  • wos:000244232000007
  • scopus:34247850134
ISSN
1612-2011
DOI
10.1002/lapl.200610070
language
English
LU publication?
yes
id
d1bf5b63-46e5-4365-a176-6a7663cc2e20 (old id 674534)
date added to LUP
2007-12-07 12:04:41
date last changed
2017-11-19 03:31:53
@article{d1bf5b63-46e5-4365-a176-6a7663cc2e20,
  abstract     = {The appearance of coherent artifact signals in transient absorption spectroscopy employing a spectrally integrated detection system is studied. The influence of the detection design on the shape of the observed signal is detailed and the experimentally very important case, in which the shape of the coherent artifact is strongly influenced by the presence of the sample itself, is considered - leading to the situation that the artifact signal cannot be accounted for by simple comparison of the kinetics obtained for the solvent only. Finally an estimate of the relative contribution of the artifact to the overall transient absorption change is presented facilitating the interpretation of short time transients in the presence of artifact contributions and allowing to estimate the excited state absorption cross-section for a known pump-intensity dependence of the artifact signal.},
  author       = {Dietzek, Benjamin and Pascher, Torbjörn and Sundström, Villy and Yartsev, Arkady},
  issn         = {1612-2011},
  keyword      = {detector design,artifact,coherent,non-linear optics,ultrafast spectroscopy,pulse propagation},
  language     = {eng},
  number       = {1},
  pages        = {38--43},
  publisher    = {John Wiley & Sons},
  series       = {Laser Physics Letters},
  title        = {Appearance of coherent artifact signals in femtosecond transient absorption spectroscopy in dependence on detector design},
  url          = {http://dx.doi.org/10.1002/lapl.200610070},
  volume       = {4},
  year         = {2007},
}