OSA's Digital Library

Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 1, Iss. 5 — May. 5, 2006

Spectroscopic studies of wood-drying processes

Mats Andersson, Linda Persson, Mikael Sjöholm, and Sune Svanberg  »View Author Affiliations

Optics Express, Vol. 14, Issue 8, pp. 3641-3653 (2006)

View Full Text Article

Enhanced HTML    Acrobat PDF (737 KB) Open Access

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



By the use of wavelength-modulation diode laser spectroscopy, water vapor and oxygen are detected in scattering media nonintrusively, at 980 nm and 760 nm, respectively. The technique demonstrated is based on the fact that free gases have extremely sharp absorption structures in comparison with the broad features of bulk material. Water vapor and oxygen measurements have been performed during the drying process of wood. The results suggest that the demonstrated technique can give information about the drying process of wood to complement that of commercially available moisture meters. In particular, the time when all the free water has evaporated from the wood can be readily identified by a strong falloff in the water vapor signal accompanied by the reaching of a high-level plateau in the molecular oxygen signal. Furthermore, the same point is identified in the differential optical absorption signal for liquid water, with a sharp increase by an order of magnitude in the ratio of the signal intensities at 980 nm and 760 nm.

© 2006 Optical Society of America

OCIS Codes
(000.2190) General : Experimental physics
(290.7050) Scattering : Turbid media
(300.6260) Spectroscopy : Spectroscopy, diode lasers

ToC Category:

Original Manuscript: February 3, 2006
Revised Manuscript: March 28, 2006
Manuscript Accepted: April 3, 2006
Published: April 17, 2006

Virtual Issues
Vol. 1, Iss. 5 Virtual Journal for Biomedical Optics

Mats Andersson, Linda Persson, Mikael Sjöholm, and Sune Svanberg, "Spectroscopic studies of wood-drying processes," Opt. Express 14, 3641-3653 (2006)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. J. M. Dinwoodie, "Timber: Its nature and behaviour," (E & FN, 2000). [CrossRef]
  2. B. Berglund, B. Brunekreef, H. Knöppel, T. Lindvall, M. Maroni, L. Mølhave, and P. Skov, "Effects of indoor air pollution on human health," Indoor Air 2, 2-25 (1992). [CrossRef]
  3. S. Joseph Cohen and T C.S Yang, "Progress in food dehydration," Trends in Food Science & Technology6, (1995).
  4. D. A. Skoog and M.D. West, "Fundamentals of Analytical Chemistry," 7th edition, (Saunders, 1995).
  5. G. Müller, B. Chance, R. Alfano, S. Arridge, J. Beuthan, E. Gratton, M. Kaschke, B. Masters, S. Svanberg, and P. van der Zee, eds., "Medical optical tomography, functional imaging and monitoring," in SPIE Institute Series, Vol. 11, (SPIE, 1993).
  6. C. Abrahamsson, J. Johansson, S. Andersson-Engels, S. Svanberg, and S. Folestad, "Time-resolved NIR spectroscopy for quantitative analysis of intact pharmaceutical tablets," Anal. Chem. 77, 1055-1059 (2005). [CrossRef] [PubMed]
  7. T. J. Farrell, M. S. Pattersson, and 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. M. S. Pattersson, B. Chance, and B. C. Wilson, "Time-resolved reflectance and transmittance for the noninvasive measurement of tissue optical properties," Appl. Opt. 28, 2331-2336 (1989). [CrossRef]
  9. C. af Klinteberg, A. Pifferi, S. Andersson-Engels, R. Cubeddu, and S. Svanberg, "In vivo absorption spectroscopy of tumor sensitizers using femtosecond white light," Appl. Opt. 44, 2213-2220 (2005). [CrossRef] [PubMed]
  10. M. Sjöholm, G. Somesfalean, J. Alnis, S. Andersson-Engels, and S. Svanberg, "Analysis of gas dispersed in scattering media," Opt. Lett. 26,16-18 (2001). [CrossRef]
  11. J. Alnis, B. Anderson, M. Sjöholm, G. Somesfalean, and S. Svanberg, "Laser spectroscopy on free molecular oxygen dispersed in wood materials," Appl. Phys. B 77, 691-695 (2003). [CrossRef]
  12. L. Persson, H. Gao, M. Sjöholm, and S. Svanberg, "Diode laser absorption spectroscopy for studies of gas exchange in fruits," Opt. Lasers Eng. 44, 687-698 (2006). [CrossRef]
  13. L. Persson, B. Anderson, M. Andersson, M. Sjöholm, and S. Svanberg, "Studies of gas exchange in fruits using laser spectroscopic techniques," in Proceedings of Fruitic05 Symposium (Montpellier, France, September 12-16, 2005).
  14. G. Somesfalean, M. Sjöholm, J. Alnis, C. af Klinteberg, S. Andersson-Engels,and S. Svanberg, "Concentration measurement of gas imbedded in scattering media employing time and spatially resolved techniques," Appl. Opt. 41, 3538-3544 (2002). [CrossRef] [PubMed]
  15. L. Persson, K. Svanberg, and S. Svanberg, "On the potential of human sinus cavity diagnostics using diode laser gas spectroscopy," Appl. Phys. B 82,313-317 (2006). [CrossRef]
  16. L. Sandra, B. Roderick, and M. L. Roderick, "Plant-water relations and the fibre saturation point," New Phytol. 168, 25-37 (2005). [CrossRef]
  17. P. Perré, "The role of wood anatomy in the drying of wood: Great Oaks from little acorns grow," 8th Int. IUFRO Wood Drying Conference (Brasov, Rumania, August 24-29, 2003).
  18. M. Goyeneche, D. Lasseux, and D. Bruneau, "A film-flow model to describe free water transport during drying of a hydroscopic capillary porous medium," Transp. Porous Media 48, 125-158 (2002). [CrossRef]
  19. L. James, "Electric moisture meters for wood," Gen. Tech. Rep. FPL-GTR-6. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 1988.
  20. H. Forsén and V. Tarvainen, "Accuracy and functionality of hand held wood moisture content meters," VTT Publications 420 (2000).
  21. P. J. Wilson, "Accuracy of a capacitance-type and three resistance-type pin meters for measuring wood moisture content," Forest Products Journal,  49, 29-32 (1999).
  22. C. Nordling and J. Osterman, "Physics Handbook," 4th ed. (Studentlitteratur, 1987).
  23. S. Matcher, M Cope, and D. Delpy, "Use of the water absorption spectrum to quantify tissue chromophore concentration changes in near infrared spectroscopy," Phys. Med. Biol. 39,177-196 (1994). [CrossRef] [PubMed]
  24. T. Svensson, J. Swartling, P. Taroni, A. Torricelli, P. Lindblom, C. Ingvar, and S. Andersson-Engels, "Characterization of normal breast tissue heterogeneity using time-resolved near-infrared spectroscopy," Phys. Med. Biol. 50,2559-2571 (2005). [CrossRef] [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited