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Concentration measurement of gas embedded in scattering media by employing absorption and time-resolved laser spectroscopy

Somesfalean, Gabriel LU ; Sjöholm, Mikael LU ; Alnis, J; af Klinteberg, C; Andersson-Engels, Stefan LU and Svanberg, Sune LU (2002) In Applied Optics 41(18). p.3538-3544
Abstract
Diode-laser-based absorption spectroscopy for the evaluation of embedded gas concentrations in porous materials is demonstrated in measurements of molecular oxygen dispersed throughout scattering polystyrene foam, used here as a generic test material. The mean path length of light scattered in the material is determined with the temporal characteristics of the radiation transmitted through the sample. This combined with sensitive gas-absorption measurements employing wavelength-modulation spectroscopy yields an oxygen concentration in polystyrene foam of 20.4% corresponding to a foam porosity of 98%, which is consistent with manufacturing specifications. This feasibility study opens many possibilities for quantitative measurements by using... (More)
Diode-laser-based absorption spectroscopy for the evaluation of embedded gas concentrations in porous materials is demonstrated in measurements of molecular oxygen dispersed throughout scattering polystyrene foam, used here as a generic test material. The mean path length of light scattered in the material is determined with the temporal characteristics of the radiation transmitted through the sample. This combined with sensitive gas-absorption measurements employing wavelength-modulation spectroscopy yields an oxygen concentration in polystyrene foam of 20.4% corresponding to a foam porosity of 98%, which is consistent with manufacturing specifications. This feasibility study opens many possibilities for quantitative measurements by using the method of gas-in-scattering-media absorption spectroscopy. (C) 2002 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
41
issue
18
pages
3538 - 3544
publisher
OSA
external identifiers
  • scopus:0037141918
ISSN
2155-3165
DOI
10.1364/AO.41.003538
language
English
LU publication?
yes
id
1d905526-8bda-4f25-9c1f-d4e79e0a7542 (old id 2259406)
date added to LUP
2012-02-09 22:02:32
date last changed
2017-04-23 04:35:03
@article{1d905526-8bda-4f25-9c1f-d4e79e0a7542,
  abstract     = {Diode-laser-based absorption spectroscopy for the evaluation of embedded gas concentrations in porous materials is demonstrated in measurements of molecular oxygen dispersed throughout scattering polystyrene foam, used here as a generic test material. The mean path length of light scattered in the material is determined with the temporal characteristics of the radiation transmitted through the sample. This combined with sensitive gas-absorption measurements employing wavelength-modulation spectroscopy yields an oxygen concentration in polystyrene foam of 20.4% corresponding to a foam porosity of 98%, which is consistent with manufacturing specifications. This feasibility study opens many possibilities for quantitative measurements by using the method of gas-in-scattering-media absorption spectroscopy. (C) 2002 Optical Society of America.},
  author       = {Somesfalean, Gabriel and Sjöholm, Mikael and Alnis, J and af Klinteberg, C and Andersson-Engels, Stefan and Svanberg, Sune},
  issn         = {2155-3165},
  language     = {eng},
  number       = {18},
  pages        = {3538--3544},
  publisher    = {OSA},
  series       = {Applied Optics},
  title        = {Concentration measurement of gas embedded in scattering media by employing absorption and time-resolved laser spectroscopy},
  url          = {http://dx.doi.org/10.1364/AO.41.003538},
  volume       = {41},
  year         = {2002},
}