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Raman linewidth measurements using time-resolved hybrid picosecond/nanosecond rotational CARS

Nordström, Emil LU ; Hosseinnia, Ali LU orcid ; Brackmann, Christian LU ; Bood, Joakim LU and Bengtsson, Per-Erik LU orcid (2015) In Optics Letters 40(24). p.5718-5721
Abstract
We report an innovative approach for time-domain measurements of S-branch Raman linewidths using hybrid picosecond/nanosecond pure-rotational coherent anti-Stokes Raman spectroscopy (RCARS). The Raman coherences are created by two picosecond excitation pulses and are probed using a narrow-band nanosecond pulse at 532 nm. The generated RCARS signal contains the entire coherence decay in a single pulse. By extracting the decay times of the individual transitions, the J-dependent Raman linewidths can be calculated. Self-broadened S-branch linewidths for nitrogen and oxygen at 293 K and ambient pressure are in good agreement with previous time-domain measurements. Experimental considerations of the approach are discussed along with its merits... (More)
We report an innovative approach for time-domain measurements of S-branch Raman linewidths using hybrid picosecond/nanosecond pure-rotational coherent anti-Stokes Raman spectroscopy (RCARS). The Raman coherences are created by two picosecond excitation pulses and are probed using a narrow-band nanosecond pulse at 532 nm. The generated RCARS signal contains the entire coherence decay in a single pulse. By extracting the decay times of the individual transitions, the J-dependent Raman linewidths can be calculated. Self-broadened S-branch linewidths for nitrogen and oxygen at 293 K and ambient pressure are in good agreement with previous time-domain measurements. Experimental considerations of the approach are discussed along with its merits and limitations. The approach can be extended to a wide range of pressures and temperatures and has potential for simultaneous single-shot thermometry and linewidth determination. (C) 2015 Optical Society of America (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Letters
volume
40
issue
24
pages
5718 - 5721
publisher
Optical Society of America
external identifiers
  • wos:000366681600006
  • scopus:84956606760
ISSN
0146-9592
DOI
10.1364/OL.40.005718
language
English
LU publication?
yes
id
e8211d2f-ecb8-4a8a-adfd-57c30b28f67e (old id 8548832)
date added to LUP
2016-04-01 13:50:00
date last changed
2022-04-21 23:54:10
@article{e8211d2f-ecb8-4a8a-adfd-57c30b28f67e,
  abstract     = {{We report an innovative approach for time-domain measurements of S-branch Raman linewidths using hybrid picosecond/nanosecond pure-rotational coherent anti-Stokes Raman spectroscopy (RCARS). The Raman coherences are created by two picosecond excitation pulses and are probed using a narrow-band nanosecond pulse at 532 nm. The generated RCARS signal contains the entire coherence decay in a single pulse. By extracting the decay times of the individual transitions, the J-dependent Raman linewidths can be calculated. Self-broadened S-branch linewidths for nitrogen and oxygen at 293 K and ambient pressure are in good agreement with previous time-domain measurements. Experimental considerations of the approach are discussed along with its merits and limitations. The approach can be extended to a wide range of pressures and temperatures and has potential for simultaneous single-shot thermometry and linewidth determination. (C) 2015 Optical Society of America}},
  author       = {{Nordström, Emil and Hosseinnia, Ali and Brackmann, Christian and Bood, Joakim and Bengtsson, Per-Erik}},
  issn         = {{0146-9592}},
  language     = {{eng}},
  number       = {{24}},
  pages        = {{5718--5721}},
  publisher    = {{Optical Society of America}},
  series       = {{Optics Letters}},
  title        = {{Raman linewidth measurements using time-resolved hybrid picosecond/nanosecond rotational CARS}},
  url          = {{http://dx.doi.org/10.1364/OL.40.005718}},
  doi          = {{10.1364/OL.40.005718}},
  volume       = {{40}},
  year         = {{2015}},
}