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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 15 — Aug. 1, 1984
  • pp: 2554–2558

Measurements of particle number density using the variable-fringe-spacing laser Doppler velocimeter

K. Tedjojuwono, T. Asakura, and Y. Kawase  »View Author Affiliations


Applied Optics, Vol. 23, Issue 15, pp. 2554-2558 (1984)
http://dx.doi.org/10.1364/AO.23.002554


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Abstract

A dual-beam differential-type laser Doppler velocimeter using variable fringe spacing is proposed to measure the number density as well as the velocity of homogeneous monodisperse particles. The main function of the system is to investigate the variation in the visibility of the photodetector signal as a function of the crossing angle of the two beams. A preliminary experimental study was conducted to verify the theory. Good agreement between the theoretical and experimental results was obtained.

© 1984 Optical Society of America

History
Original Manuscript: January 17, 1984
Published: August 1, 1984

Citation
K. Tedjojuwono, T. Asakura, and Y. Kawase, "Measurements of particle number density using the variable-fringe-spacing laser Doppler velocimeter," Appl. Opt. 23, 2554-2558 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-15-2554


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References

  1. H. Mishina, T. Asakura, S. Nagai, “A Laser Doppler Microscope,” Opt. Commun. 11, 99 (1974). [CrossRef]
  2. E. O. Schulz-Dubois, H. Koppe, P. Brummer, “Signal Statistics of Laser Light Scattering,” Appl. Phys. 21, 369 (1980). [CrossRef]
  3. W. M. Farmer, “Measurement of Particle Size, Number Density, and Velocity Using a Laser Interferometer,” Appl. Opt. 11, 2603 (1972). [CrossRef] [PubMed]
  4. M. J. Rudd, “A New Theoretical Model for the Laser Dopplermeter,” J. Phys. E 2, 55 (1969). [CrossRef]
  5. T. S. Durrani, C. A. Greated, Laser Systems in Flow Measurements (Plenum, New York, 1977). [CrossRef]
  6. K. Tedjojuwono, Y. Kawase, T. Asakura, “Effect of Particle Density on the Photodetector Signal of Differential-Type Laser Doppler Velocimetry,” Optik, (1984), in press.

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