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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 12 — Apr. 20, 2005
  • pp: 2274–2280

Laser-Doppler velocity profile sensor with submicrometer spatial resolution that employs fiber optics and a diffractive lens

Lars Büttner, Jürgen Czarske, and Hans Knuppertz  »View Author Affiliations


Applied Optics, Vol. 44, Issue 12, pp. 2274-2280 (2005)
http://dx.doi.org/10.1364/AO.44.002274


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Abstract

We report a novel laser-Doppler velocity profile sensor for microfluidic and nanofluidic applications and turbulence research. The sensor’s design is based on wavelength-division multiplexing. The high dispersion of a diffractive lens is used to generate a measurement volume with convergent and divergent interference fringes by means of two laser wavelengths. Evaluation of the scattered light from tracers allows velocity gradients to be measured in flows with submicrometer spatial resolution inside a measurement volume of 700-µm length. Using diffraction optics and fiber optics, we achieved a miniaturized and robust velocity profile sensor for highly resolved velocity measurements.

© 2005 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(280.3340) Remote sensing and sensors : Laser Doppler velocimetry

History
Original Manuscript: July 28, 2004
Revised Manuscript: November 22, 2004
Manuscript Accepted: November 22, 2004
Published: April 20, 2005

Citation
Lars Büttner, Jürgen Czarske, and Hans Knuppertz, "Laser-Doppler velocity profile sensor with submicrometer spatial resolution that employs fiber optics and a diffractive lens," Appl. Opt. 44, 2274-2280 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-12-2274


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References

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