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

Gabriel Somesfalean; Mikael Sjoholm; Janis Alnis; Claes Af Klinteberg; Stefan Andersson-Engels; Sune Svanberg

doi:10.1364/AO.41.003538

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

Gabriel Somesfalean
, Mikael Sjoholm
, Janis Alnis
, Claes Af Klinteberg
, Stefan Andersson-Engels
, Sune Svanberg

Lund University

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	3538-3544
Number of pages	7
Journal	Applied Optics
Volume	41
Issue number	18
DOIs	https://doi.org/10.1364/AO.41.003538
Publication status	Published - 20 Jun 2002
Externally published	Yes

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10.1364/AO.41.003538

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

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.",

author = "Gabriel Somesfalean and Mikael Sjoholm and Janis Alnis and Klinteberg, \{Claes Af\} and Stefan Andersson-Engels and Sune Svanberg",

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T1 - Concentration measurement of gas embedded in scattering media by employing absorption and time-resolved laser spectroscopy

AU - Somesfalean, Gabriel

AU - Sjoholm, Mikael

AU - Alnis, Janis

AU - Klinteberg, Claes Af

AU - Andersson-Engels, Stefan

AU - Svanberg, Sune

PY - 2002/6/20

Y1 - 2002/6/20

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/0037141918

U2 - 10.1364/AO.41.003538

DO - 10.1364/AO.41.003538

M3 - Article

AN - SCOPUS:0037141918

SN - 1559-128X

VL - 41

SP - 3538

EP - 3544

JO - Applied Optics

JF - Applied Optics

IS - 18

ER -

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

Abstract

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