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Time-domain measurements of S-branch N-2-N-2 Raman linewidths using picosecond pure rotational coherent anti-Stokes Raman spectroscopy

Kliewer, C. J.; Bohlin, Alexis LU ; Nordström, Emil LU ; Patterson, B. D.; Bengtsson, Per-Erik LU and Settersten, T. B. (2012) In Applied Physics B 108(2). p.419-426
Abstract
Time-resolved dual-broadband picosecond pure rotational CARS has been applied to measure self-broadened S-branch N-2-N-2 Raman linewidths in the temperature range 294-1466 K. The coherence decays were detected directly in the time domain by following the J-dependent CARS signal decay as a function of probe delay. The rotational Raman N-2-N-2 linewidths were derived from these time-dependent decays and evaluated for thermometric accuracy. Comparisons were made to the energy-corrected sudden (ECS) and modified exponential gap (MEG) dynamical scaling laws, and the results were used to quantify the sensitivity of nanosecond rotational CARS thermometry to the linewidth model employed. The uncertainty based on the linewidth model used in pure... (More)
Time-resolved dual-broadband picosecond pure rotational CARS has been applied to measure self-broadened S-branch N-2-N-2 Raman linewidths in the temperature range 294-1466 K. The coherence decays were detected directly in the time domain by following the J-dependent CARS signal decay as a function of probe delay. The rotational Raman N-2-N-2 linewidths were derived from these time-dependent decays and evaluated for thermometric accuracy. Comparisons were made to the energy-corrected sudden (ECS) and modified exponential gap (MEG) dynamical scaling laws, and the results were used to quantify the sensitivity of nanosecond rotational CARS thermometry to the linewidth model employed. The uncertainty based on the linewidth model used in pure N-2 was found to be 2 %. The merits and limitations of this rapid method for the determination of accurate Raman linewidths are discussed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics B
volume
108
issue
2
pages
419 - 426
publisher
Springer
external identifiers
  • wos:000307883300022
  • scopus:84868548386
ISSN
0946-2171
DOI
10.1007/s00340-012-5037-2
language
English
LU publication?
yes
id
ef119c66-23f1-4b68-8c4e-bb6e799bf59c (old id 3151905)
date added to LUP
2012-10-29 11:47:16
date last changed
2017-10-22 03:30:14
@article{ef119c66-23f1-4b68-8c4e-bb6e799bf59c,
  abstract     = {Time-resolved dual-broadband picosecond pure rotational CARS has been applied to measure self-broadened S-branch N-2-N-2 Raman linewidths in the temperature range 294-1466 K. The coherence decays were detected directly in the time domain by following the J-dependent CARS signal decay as a function of probe delay. The rotational Raman N-2-N-2 linewidths were derived from these time-dependent decays and evaluated for thermometric accuracy. Comparisons were made to the energy-corrected sudden (ECS) and modified exponential gap (MEG) dynamical scaling laws, and the results were used to quantify the sensitivity of nanosecond rotational CARS thermometry to the linewidth model employed. The uncertainty based on the linewidth model used in pure N-2 was found to be 2 %. The merits and limitations of this rapid method for the determination of accurate Raman linewidths are discussed.},
  author       = {Kliewer, C. J. and Bohlin, Alexis and Nordström, Emil and Patterson, B. D. and Bengtsson, Per-Erik and Settersten, T. B.},
  issn         = {0946-2171},
  language     = {eng},
  number       = {2},
  pages        = {419--426},
  publisher    = {Springer},
  series       = {Applied Physics B},
  title        = {Time-domain measurements of S-branch N-2-N-2 Raman linewidths using picosecond pure rotational coherent anti-Stokes Raman spectroscopy},
  url          = {http://dx.doi.org/10.1007/s00340-012-5037-2},
  volume       = {108},
  year         = {2012},
}