OSA's Digital Library

Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 23 — Dec. 1, 2009
  • pp: 3743–3745

Robust sensor for turbidity measurement from light scattering and absorbing liquids

Ville Kontturi, Petri Turunen, Jun Uozumi, and Kai-Erik Peiponen  »View Author Affiliations

Optics Letters, Vol. 34, Issue 23, pp. 3743-3745 (2009)

View Full Text Article

Enhanced HTML    Acrobat PDF (372 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Internationally standardized turbidity measurements for probing solid particles in liquid are problematic in the case of simultaneous light scattering and absorption. A method and a sensor to determine the turbidity in the presence of light absorption are presented. The developed sensor makes use of the total internal reflection of a laser beam at the liquid–prism interface, and the turbidity is assessed using the concept of laser speckle pattern. Using average filtering in speckle data analyzing the observed dynamic speckle pattern, which is due to light scattering from particles and the static speckle due to stray light of the sensor, can be separated from each other. Good correlation between the standard deviation of dynamic speckle and turbidity value for nonabsorbing and for absorbing liquids was observed. The sensor is suggested, for instance, for the measurement of ill-behaved as well as small-volume turbid liquids in both medicine and process industry.

© 2009 Optical Society of America

OCIS Codes
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(120.6150) Instrumentation, measurement, and metrology : Speckle imaging
(230.5480) Optical devices : Prisms
(290.5820) Scattering : Scattering measurements
(290.7050) Scattering : Turbid media

ToC Category:

Original Manuscript: August 4, 2009
Revised Manuscript: October 28, 2009
Manuscript Accepted: November 5, 2009
Published: November 30, 2009

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

Ville Kontturi, Petri Turunen, Jun Uozumi, and Kai-Erik Peiponen, "Robust sensor for turbidity measurement from light scattering and absorbing liquids," Opt. Lett. 34, 3743-3745 (2009)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. J. Klahre and H.-C. Flemming, Water Res. 34, 3657 (2000). [CrossRef]
  2. A. Bes-Pia, J. A. Mendoza-Roca, M. I. Alcaina-Miranda, A. Iborra-Clar, and M. I. Iborra-Clar, Desalination 15773 (2003). [CrossRef]
  3. R. D. Morris, E. N. Naumova, R. Levin, and R. L. Munasinghe, Am. J. Public Health 86, 237 (1996). [CrossRef] [PubMed]
  4. J. W. Sigler, T. C. Bjornn, and F. H. Everest, Trans. Am Fish. Soc. 113, 142 (1984). [CrossRef]
  5. ISO 7027, Water Quality-Determination of Turbidity (ISO, 1999).
  6. USEPA 180.1, Method 180.1, Determination of Turbidity by Nephelometry (United States Environmental Protection Agency, 1993).
  7. ASTM D6855-03, ASTM D6855-03 Standard Test Method for Determination of Turbidity Below 5 NTU in Static Mode (ASTM, 2003).
  8. J. Räty, K.-E. Peiponen, and T. Asakura, UV-Visible Reflection Spectroscopy of Liquids (Springer, 2004).
  9. H. Matsuoka, Macromol. Rapid Commun. 22, 51 (2001). [CrossRef]
  10. M. A. C. Potenza, D. Brogioli, and M. Giglio, Appl. Phys. Lett. 85, 2730 (2004). [CrossRef]
  11. I. Fecht and M. Johnson, Meas. Sci. Technol. 10, 612 (1996). [CrossRef]
  12. R. K. Erf, Speckle Metrology (Academic, 1978).
  13. F. M. Mirabella Jr., Internal Reflection Spectroscopy: Theory and Applications (Marcel Dekker, 1993).

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.


Fig. 1 Fig. 2 Fig. 3

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited