Three interfering beams in laser Doppler velocimetry for particle position and microflow velocity profile measurements
Applied Optics, Vol. 45, Issue 14, pp. 3317-3324 (2006)
http://dx.doi.org/10.1364/AO.45.003317
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Abstract
It is proposed to use three interfering and coplanar laser beams to form the probe volume of laser Doppler systems. This allows us to obtain, for each particle crossing this probe volume, a Doppler signal whose frequency amplitude spectrum exhibits two characteristic peaks. Electromagnetic calculations and experimental validations clearly demonstrate that we can estimate simultaneously, from the analysis of these two frequency peaks, the particle position along the optical axis and one velocity component. This technique is expected to have great potentialities for velocity profile measurements in microfluidic or boundary layer flows, as well as for the sizing of spherical particles.
© 2006 Optical Society of America
OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(280.2490) Remote sensing and sensors : Flow diagnostics
(280.3340) Remote sensing and sensors : Laser Doppler velocimetry
(290.5850) Scattering : Scattering, particles
History
Original Manuscript: July 22, 2005
Revised Manuscript: December 2, 2005
Manuscript Accepted: December 6, 2005
Virtual Issues
Vol. 1, Iss. 6 Virtual Journal for Biomedical Optics
Citation
Fabrice Onofri, "Three interfering beams in laser Doppler velocimetry for particle position and microflow velocity profile measurements," Appl. Opt. 45, 3317-3324 (2006)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-45-14-3317
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