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Proceedings Paper

Visualization and measurement of acoustic and fluidic phenomena using a laser-scanning vibrometer
Author(s): Lothar Zipser; Heinz Franke
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Paper Abstract

A new method for non-interactively measuring and visualising turbulences, e.g. vortexes, and acoustic sound waves in gases is described. The measuring effect is based on the path difference ?? between two interfering laser beams. This difference results from changes of the refractive index n, caused by pressure fluctuations p(t) in a measuring volume. The method is practicable in both the audio and the ultrasonic ranges, as well as for spatially small turbulences. It is adequate for the investigation and demonstration of numerous acoustic, fluidic and fluid-acoustic phenomena.

Paper Details

Date Published: 22 May 2002
PDF: 7 pages
Proc. SPIE 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2002); doi: 10.1117/12.468183
Show Author Affiliations
Lothar Zipser, Dresden Univ. of Applied Technology (Germany)
Heinz Franke, Dresden Univ. of Applied Technology (Germany)


Published in SPIE Proceedings Vol. 4827:
Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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