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Optics Letters

Optics Letters


  • Vol. 24, Iss. 9 — May. 1, 1999
  • pp: 575–577

Digital speckle-pattern interferometry as a full-field fluid-velocimetry technique

Nieves Andrés, M. Pilar Arroyo, Heiko Hinrichs, and Manuel Quintanilla  »View Author Affiliations

Optics Letters, Vol. 24, Issue 9, pp. 575-577 (1999)

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We present a novel fluid-velocimetry technique based on speckle interferometry. The light scattered from an illuminated plane is recorded with a CCD camera at the same time as a speckled reference beam. Substraction of two nonsimultaneous frames provides information about the velocity field for an out-of-plane component. An application to a Rayleigh–Bénard convective flow is given.

© 1999 Optical Society of America

OCIS Codes
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry
(120.7250) Instrumentation, measurement, and metrology : Velocimetry
(280.2490) Remote sensing and sensors : Flow diagnostics

Nieves Andrés, M. Pilar Arroyo, Heiko Hinrichs, and Manuel Quintanilla, "Digital speckle-pattern interferometry as a full-field fluid-velocimetry technique," Opt. Lett. 24, 575-577 (1999)

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  2. M. P. Arroyo and C. A. Greated, Meas. Sci. Technol. 2, 1181 (1991).
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  4. N. Andrés, M. P. Arroyo, and M. Quintanilla, Appl. Opt. 36, 6997 (1997); N. Andrés, M. P. Arroyo, H. Hinrichs, K. Hinsch, and M. Quintanilla, Proc. Inst. Mech. Eng. C 451, 1 (1998).
  5. A. E. Ennos, in Laser Speckle and Related Phenomena, J. C. Dainty, ed. (Springer-Verlag, Berlin, 1975), Chap. 6.
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