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Oxygen measurement by multimode diode lasers employing gas correlation spectroscopy

Lou, Xiutao; Somesfalean, Gabriel LU ; Chen, Bin and Zhang, Zhiguo (2009) In Applied Optics 48(5). p.990-997
Abstract
Multimode diode laser (MDL)-based correlation spectroscopy (COSPEC) was used to measure oxygen in ambient air, thereby employing a diode laser (DL) having an emission spectrum that overlaps the oxygen absorption lines of the A band. A sensitivity of 700 ppm m was achieved with good accuracy (2%) and linearity (R-2 = 0.999). For comparison, measurements of ambient oxygen were also performed by tunable DL absorption spectroscopy (TDLAS) technique employing a vertical cavity surface emitting laser. We demonstrate that, despite slightly degraded sensitivity, the MDL-based COSPEC-based oxygen sensor has the advantages of high stability, low cost, ease-of-use, and relaxed requirements in component selection and instrument buildup compared with... (More)
Multimode diode laser (MDL)-based correlation spectroscopy (COSPEC) was used to measure oxygen in ambient air, thereby employing a diode laser (DL) having an emission spectrum that overlaps the oxygen absorption lines of the A band. A sensitivity of 700 ppm m was achieved with good accuracy (2%) and linearity (R-2 = 0.999). For comparison, measurements of ambient oxygen were also performed by tunable DL absorption spectroscopy (TDLAS) technique employing a vertical cavity surface emitting laser. We demonstrate that, despite slightly degraded sensitivity, the MDL-based COSPEC-based oxygen sensor has the advantages of high stability, low cost, ease-of-use, and relaxed requirements in component selection and instrument buildup compared with the TDLAS-based instrument. (C) 2009 Optical Society of America (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Optics
volume
48
issue
5
pages
990 - 997
publisher
OSA
external identifiers
  • wos:000264210900027
  • scopus:61449156463
ISSN
2155-3165
DOI
10.1364/AO.48.000990
language
English
LU publication?
yes
id
d8181b51-49e0-4c35-a09a-165e560ef0f0 (old id 1405044)
date added to LUP
2009-06-10 15:43:14
date last changed
2017-09-10 03:33:45
@article{d8181b51-49e0-4c35-a09a-165e560ef0f0,
  abstract     = {Multimode diode laser (MDL)-based correlation spectroscopy (COSPEC) was used to measure oxygen in ambient air, thereby employing a diode laser (DL) having an emission spectrum that overlaps the oxygen absorption lines of the A band. A sensitivity of 700 ppm m was achieved with good accuracy (2%) and linearity (R-2 = 0.999). For comparison, measurements of ambient oxygen were also performed by tunable DL absorption spectroscopy (TDLAS) technique employing a vertical cavity surface emitting laser. We demonstrate that, despite slightly degraded sensitivity, the MDL-based COSPEC-based oxygen sensor has the advantages of high stability, low cost, ease-of-use, and relaxed requirements in component selection and instrument buildup compared with the TDLAS-based instrument. (C) 2009 Optical Society of America},
  author       = {Lou, Xiutao and Somesfalean, Gabriel and Chen, Bin and Zhang, Zhiguo},
  issn         = {2155-3165},
  language     = {eng},
  number       = {5},
  pages        = {990--997},
  publisher    = {OSA},
  series       = {Applied Optics},
  title        = {Oxygen measurement by multimode diode lasers employing gas correlation spectroscopy},
  url          = {http://dx.doi.org/10.1364/AO.48.000990},
  volume       = {48},
  year         = {2009},
}