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Sjöholm M, Somesfalean G, Alnis J, et al. Analysis of gas dispersed in scattering media. Opt Lett. 2001;26(1):16-8doi: 10.1364/ol.26.000016.
Sjöholm, M., Somesfalean, G., Alnis, J., Andersson-Engels, S., & Svanberg, S. (2001). Analysis of gas dispersed in scattering media. Optics letters, 26(1), 16-8. https://doi.org/10.1364/ol.26.000016
Sjöholm, M, et al. "Analysis of gas dispersed in scattering media." Optics letters vol. 26,1 (2001): 16-8. doi: https://doi.org/10.1364/ol.26.000016
Sjöholm M, Somesfalean G, Alnis J, Andersson-Engels S, Svanberg S. Analysis of gas dispersed in scattering media. Opt Lett. 2001 Jan 01;26(1):16-8. doi: 10.1364/ol.26.000016. PMID: 18033492.
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Opt Lett. 2001 Jan 01;26(1):16-8. doi: 10.1364/ol.26.000016.

Analysis of gas dispersed in scattering media.

Optics letters

M Sjöholm, G Somesfalean, J Alnis, S Andersson-Engels, S Svanberg

PMID: 18033492 DOI: 10.1364/ol.26.000016

Abstract

Monitoring of free gas embedded in scattering media, such as wood, fruits, and synthetic materials, is demonstrated by use of diode laser spectroscopy combined with sensitive modulation techniques. Gas detection is made possible by the contrast of the narrow absorptive feature of the free-gas molecules with the slow wavelength dependence of the absorption and scattering cross sections in solids and liquids. An absorption sensitivity of 2.5 x 10(-4), corresponding to a 1.25-mm air column, is demonstrated by measurements of dispersed molecular oxygen. These techniques open up new possibilities for characterization and diagnostics, including internal gas pressure and gas-exchange assessment, in organic and synthetic materials.

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