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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 4 — Feb. 1, 2011
  • pp: A60–A67

Laser-based diagnostics for the measurement of liquid water film thickness

Daniel Greszik, Huinan Yang, Thomas Dreier, and Christof Schulz  »View Author Affiliations

Applied Optics, Vol. 50, Issue 4, pp. A60-A67 (2011)

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Three different diagnostic techniques are investigated for measurement of the thickness of liquid water films deposited on a transparent quartz plate. The methods are based on laser-induced fluorescence (LIF) from low concentrations of a dissolved tracer substance and spontaneous Raman scattering of liquid water, respectively, both excited with 266 nm of radiation, and diode laser absorption spectroscopy (DLAS) in the near-infrared spectral region. Signal intensities are calibrated using liquid layers of known thickness between 0 and 1000 μm . When applied to evaporating liquid water films, the thickness values derived from the direct DLAS and Raman scattering measurements correlate well with each other as a function of time after the start of data recording, while the LIF signal derived thickness values decrease faster with time due to selective tracer evaporation from the liquid. The simultaneous application of the LIF with a tracer-free detection technique can serve as an in situ reference for quantitative film thickness measurements.

© 2011 Optical Society of America

OCIS Codes
(300.2530) Spectroscopy : Fluorescence, laser-induced
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6450) Spectroscopy : Spectroscopy, Raman
(310.6870) Thin films : Thin films, other properties

ToC Category:

Original Manuscript: July 12, 2010
Revised Manuscript: October 27, 2010
Manuscript Accepted: October 29, 2010
Published: December 3, 2010

Virtual Issues
Vol. 6, Iss. 3 Virtual Journal for Biomedical Optics

Daniel Greszik, Huinan Yang, Thomas Dreier, and Christof Schulz, "Laser-based diagnostics for the measurement of liquid water film thickness," Appl. Opt. 50, A60-A67 (2011)

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  1. P. G. Felton, D. C. Kyritsis, and S. K. Fulcher, “LIF visualization of liquid fuel in the intake manifold during cold start,” SAE technical paper 952464 (Society of Automotive Engineers, 1995).
  2. M. Alonso, P. J. Kay, P. J. Bowen, R. Gilchrist, and S. Sapsford, “A laser induced fluorescence technique for quantitative transient liquid fuel films utilising total internal reflection,” Exp. Fluids 48, 133–142 (2010). [CrossRef]
  3. E. Kull, G. Wittafsky, and W. Stolz, “Two-dimensional visualization of liquid layers on transparent walls,” Opt. Lett. 22, 645–647 (1997). [CrossRef] [PubMed]
  4. H. Yang, D. Greszik, T. Dreier, and C. Schulz, “Simultaneous measurement of liquid film thickness and water vapor temperature using near-infrared tunable diode laser absorption spectroscopy,” Appl. Phys. B 99, 385–390 (2010). [CrossRef]
  5. A. Schagen and M. Modigell, “Local film thickness and temperature distribution measurement in wavy liquid films with a laser-induced luminescence technique,” Exp. Fluids 43, 209–221 (2007). [CrossRef]
  6. A. A. Mouza, N. A. Vlachos, S. V. Paras, and A. J. Karabelas, “Measurements of liquid film thickness using laser light absorption method,” Exp. Fluids. 28, 355–359 (2000). [CrossRef]
  7. C. Hidrovo and D. Hart, “Emission reabsorption laser induced fluorescence (ERLIF) film thickness measurement,” Meas. Sci. Technol. 12, 467–477 (2001). [CrossRef]
  8. D. Greszik, H. Yang, T. Dreier, and C. Schulz, “Measurement of water film thickness by laser-induced fluorescence and Raman imaging,” Appl. Phys. B (2010), DOI:10.1007/s00340-010-4200-x. [CrossRef]
  9. C. Schulz and V. Sick, “Tracer-LIF diagnostics: quantitative measurement of fuel concentration, temperature and fuel/air ratio in practical combustion systems,” Prog. Energy Combust. Sci. 31, 75–121 (2005). [CrossRef]
  10. A. C. Eckbreth, Laser Diagnostics for Combustion, Temperature and Species, 2nd ed. (Gordon & Breach, 1996).
  11. M. A. Siddiqi, Institute for Combustion and Gasdynamics, University of Duisburg-Essen (private communication, 2009).
  12. H. Xu, P. J. Wentworth, N. W. Howell, and J. A. Joens, “Temperature dependent near-UV molar absorptivities of aliphatic aldehydes and ketones in aqueous solution,” Spectrochim. Acta 49, 1171–1178 (1993). [CrossRef]
  13. J. Bartlett and K. Voss, “Raman scattering by pure water and seawater,” Appl. Opt. 37, 3324–3332 (1998). [CrossRef]
  14. X. Zhou, X. Liu, J. B. Jeffries, and R. K. Hanson, “Development of a sensor for temperature and water concentration in combustion gases using a single tunable diode laser,” Meas. Sci. Technol. 14, 1459–1468 (2003). [CrossRef]
  15. G. M. Hale and M. R. Querry, “Optical constants of water in the 200 nm to 200 μm wavelength region,” Appl. Opt. 12, 555–563 (1973). [CrossRef] [PubMed]
  16. J. M. Porter, J. B. Jeffries, and R. K. Hanson, “Mid-infrared laser-absorption diagnostic for vapor-phase fuel mole fraction and liquid fuel film thickness,” Appl. Phys. B (2010), DOI:10.1007/s00340-010-3942-9. [CrossRef]
  17. J. R. Collins, “Change in the infra-red absorption spectrum of water with temperature,” Phys. Rev. 26, 771–779 (1925). [CrossRef]
  18. T. Fuyoto, H. Kronemeyer, B. Lewerich, J. Brübach, T. Fujikawa, K. Akihama, T. Dreier, and C. Schulz, “Temperature and species measurement in a quenching boundary layer on a flat-flame burner,” Exp. Fluids , 49, 783–795 (2010). [CrossRef]
  19. D. W. Mattison, J. T. C. Liu, J. B. Jeffries, and R. K. Hanson, “Tunable diode-laser temperature sensor for evaluation of a valveless pulse detonation engine,” in Proceedings of the 43rd AIAA Aerospace Sciences Meeting and Exhibit, AIAA-2005-0224 (American Institute of Aeronautics and Astronautics, 2005).
  20. W. Hentschel, A. Grote, and O. Langer, “Measurement of wall film thickness in the intake manifold of a standard production SI engine by a spectroscopic technique,” SAE technical paper 972832 (Society of Automotive Engineers, 1997).
  21. B. E. A. Saleh and M. C. Teich, Fundamentals of Photonics, Wiley Series in Pure and Applied Optics (Wiley, 1991), pp. 407–411.

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