Applied Physics B

, Volume 69, Issue 5, pp 509–512

Stereoscopic flow-tagging velocimetry

  • S. Krüger
  • G. Grünefeld
Rapid communication

DOI: 10.1007/s003400050844

Cite this article as:
Krüger, S. & Grünefeld, G. Appl Phys B (1999) 69: 509. doi:10.1007/s003400050844


A laser-based method for measuring the three components of the velocity in a plane simultaneously and instantaneously without seed particles is presented. This is achieved by combining a laser flow-tagging technique with stereoscopic detection, in which the tagged flow is viewed from two different directions. A single CCD camera is employed for this purpose by using a new optical detection system. The flow tagging is performed by two consecutive laser pulses, i.e., “write” and “read” laser pulses. The write laser creates a grid of tracer molecules (NO) by inducing a photodissociation process. The three-dimensional motion of the tracer molecules is measured by a thick read laser sheet.

PACS: 47.27.-i; 42.62.Fi 

Copyright information

© Springer-Verlag 1999

Authors and Affiliations

  • S. Krüger
    • 1
  • G. Grünefeld
    • 1
  1. 1.University of Bielefeld, Faculty of Physics Postfach 100131, 33501 Bielefeld, Germany (Fax: 49-521/1062-958, E-mail:

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