This article is cited in 9 papers

Laser applications and other topics in quantum electronics

Laser Doppler visualisation of the velocity field by excluding the influence of multiparticle scattering

Yu. N. Dubnishchev^a, Yu. V. Chugui^b, J. Kompenhans<sup>c

a</sup> Institute of Thermophysics, Siberian Branch of the Russian Academy of Science, Novosibirsk
^b Technological Design Institute of Scientific Instrument Engineering, Siberian Branch RAS, Novosibirsk
^c German Aerospace Centre, Göttingen, Germany

Abstract: The method of laser Doppler visualisation and measurement of the velocity field in gas and liquid flows by suppressing the influence of multiparticle scattering is discussed. The cross section of the flow under study is illuminated by a laser beam transformed by an anamorphic optical system into a laser sheet. The effect of multiparticle scattering is eliminated by obtaining differential combinations of frequency-demodulated images of the laser sheet in different regions of the angular spectrum of scattered light.

PACS: 42.62.Cf, 42.25.Fx, 47.80.Cb, 47.80.Jk

Received: 26.01.2009
Revised: 05.05.2009

 English version: Quantum Electronics, 2009, 39:10, 962–966

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