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Temporal correlation scheme for spectroscopic gas analysis using multimode diode lasers

Somesfalean, Gabriel LU ; Sjöholm, Mikael LU ; Persson, Linda LU ; Gao, H; Svensson, Tomas LU and Svanberg, Sune LU (2005) In Applied Physics Letters 86(18).
Abstract
The reliability of diode lasers used in spectroscopic applications is limited by their intrinsic multimode and mode-jump behavior when wavelength-tuned by current or temperature. We report on a scheme for gas analysis based on temporal correlation between absorption signals from an unknown external and a known reference gas concentration, simultaneously recorded when the diode laser wavelength is temperature-tuned across absorption features of the gas of interest. This procedure, which does not require any knowledge of the exact spectrum, also eliminates light intensity fluctuations due to mode competition. The method is illustrated for atmospheric oxygen absorption applied to diffusion measurements.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Letters
volume
86
issue
18
publisher
American Institute of Physics
external identifiers
  • wos:000229288700059
  • scopus:20844437071
ISSN
0003-6951
DOI
10.1063/1.1921351
language
English
LU publication?
yes
id
ac7a890a-6c85-4de7-a19b-d70a65f2dede (old id 239187)
date added to LUP
2007-10-05 14:59:29
date last changed
2017-08-20 03:48:44
@article{ac7a890a-6c85-4de7-a19b-d70a65f2dede,
  abstract     = {The reliability of diode lasers used in spectroscopic applications is limited by their intrinsic multimode and mode-jump behavior when wavelength-tuned by current or temperature. We report on a scheme for gas analysis based on temporal correlation between absorption signals from an unknown external and a known reference gas concentration, simultaneously recorded when the diode laser wavelength is temperature-tuned across absorption features of the gas of interest. This procedure, which does not require any knowledge of the exact spectrum, also eliminates light intensity fluctuations due to mode competition. The method is illustrated for atmospheric oxygen absorption applied to diffusion measurements.},
  author       = {Somesfalean, Gabriel and Sjöholm, Mikael and Persson, Linda and Gao, H and Svensson, Tomas and Svanberg, Sune},
  issn         = {0003-6951},
  language     = {eng},
  number       = {18},
  publisher    = {American Institute of Physics},
  series       = {Applied Physics Letters},
  title        = {Temporal correlation scheme for spectroscopic gas analysis using multimode diode lasers},
  url          = {http://dx.doi.org/10.1063/1.1921351},
  volume       = {86},
  year         = {2005},
}