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Applied Optics

Applied Optics


  • Vol. 41, Iss. 18 — Jun. 20, 2002
  • pp: 3538–3544

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

Gabriel Somesfalean, Mikael Sjöholm, Janis Alnis, Claes af Klinteberg, Stefan Andersson-Engels, and Sune Svanberg  »View Author Affiliations

Applied Optics, Vol. 41, Issue 18, pp. 3538-3544 (2002)

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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.

© 2002 Optical Society of America

OCIS Codes
(290.4210) Scattering : Multiple scattering
(290.7050) Scattering : Turbid media
(300.1030) Spectroscopy : Absorption
(300.6380) Spectroscopy : Spectroscopy, modulation
(300.6390) Spectroscopy : Spectroscopy, molecular

Original Manuscript: July 23, 2001
Revised Manuscript: January 2, 2002
Published: June 20, 2002

Gabriel Somesfalean, Mikael Sjöholm, Janis Alnis, Claes af Klinteberg, Stefan Andersson-Engels, and Sune Svanberg, "Concentration measurement of gas embedded in scattering media by employing absorption and time-resolved laser spectroscopy," Appl. Opt. 41, 3538-3544 (2002)

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  1. M. Sjöholm, G. Somesfalean, J. Alnis, S. Andersson-Engels, S. Svanberg, “Analysis of gas dispersed in scattering media,” Opt. Lett. 26, 16–18 (2001). [CrossRef]
  2. U. Gustafsson, G. Somesfalean, J. Alnis, S. Svanberg, “Frequency-modulation spectroscopy with blue diode lasers,” Appl. Opt. 39, 3774–3780 (2000). [CrossRef]
  3. B. Chance, J. S. Leigh, H. Miyake, D. S. Smith, S. Nioka, R. Greenfeld, M. Finander, K. Kaufmann, W. Levy, M. Young, P. Cohen, H. Yoshioka, R. Boretsky, “Comparison of time-resolved and unresolved measurements of deoxyhemoglobin in the brain,” Proc. Natl. Acad. Sci. USA 85, 4971–4975 (1988). [CrossRef]
  4. S. Andersson-Engels, R. Berg, S. Svanberg, O. Jarlman, “Time-resolved transillumination for medical diagnostics,” Opt. Lett. 15, 1179–1181 (1990). [CrossRef] [PubMed]
  5. M. S. Pattersson, B. Chance, B. C. Wilson, “Time-resolved reflectance and transmittance for the noninvasive measurement of tissue optical properties,” Appl. Opt. 28, 2331–2336 (1989). [CrossRef]
  6. S. R. Arridge, M. Cope, D. T. Delpy, “The theoretical basis for the determination of optical path lengths in tissue: temporal and frequency analysis, “Phys. Med. Biol. 37, 1531–1560 (1992). [CrossRef] [PubMed]
  7. T. J. Farrell, M. S. Pattersson, B. Wilson, “A diffusion theory model of spatially resolved, steady-state diffuse reflectance for noninvasive determination of tissue optical properties in vivo,” Med. Phys. 19, 879–888 (1992). [CrossRef] [PubMed]
  8. J. S. Dam, P. E. Andersen, T. Dalgaard, “Determination of tissue optical properties from diffuse reflectance profiles by multivariate calibration,” Appl. Opt. 37, 772–778 (1998). [CrossRef]
  9. R. Berg, O. Jarlman, S. Svanberg, “Medical transillumination imaging using short-pulsed diode laser,” Appl. Opt. 32, 574–579 (1993). [CrossRef] [PubMed]
  10. U. Platt, Institute for Environmental Physic, University of Heidelberg, Heidelberg, Germany (personal communication, 2000).
  11. J. K. Link, “Measurements of the radiative lifetimes of the first excited states of Na, K, Rb, and Cs by means of the phase shift method,” J. Opt. Soc. Am. 56, 1195–1199 (1966). [CrossRef]
  12. J. B. Fishkin, E. Gratton, M. J. Vande Ven, W. W. Mantulin, “Diffusion of intensity-modulated near-infrared light in turbid media,” in Time-Resolved Spectroscopy and Imaging of Tissues, B. Chance, A. Katzir, eds., Proc. SPIE1431, 122–135 (1991). [CrossRef]

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