Principles of active interferometry with a frequency bias applied to the Doppler anemometry

V. S. Sobolev; A. M. Scherbachenko; E. N. Utkin; A. A. Stolpovsky; G. A. Kashcheeva; I. V. Filimonenko; S. V. Khabarov

doi:10.1117/12.682918

10 June 2006 Principles of active interferometry with a frequency bias applied to the Doppler anemometry

V. S. Sobolev, A. M. Scherbachenko, E. N. Utkin, A. A. Stolpovsky, G. A. Kashcheeva, I. V. Filimonenko, S. V. Khabarov

Proceedings Volume 6262, Optical Methods of Flow Investigation; 626202 (2006) https://doi.org/10.1117/12.682918
Event: Optical Methods of Flow Investigation, 2005, Moscow, Russian Federation

Abstract

In this paper, offered and explored are some principles for construction of a laser Doppler measuring system on the basis of an active interferometer with feedback and frequency bias. Presented is a block-diagram of the sign-sensitive laser Doppler velosimetr (LDV) and results of its metrological investigation. The errors of this LDV can be reduced down to 0.01%. Some theoretical questions are discussed as self-mixing LDV accuracy, Doppler signal spectrum width, the number of virtual interference fringes in the measurement volume. As well the self-mixing LDA pros and cons are discussed.

Citation Download Citation

V. S. Sobolev, A. M. Scherbachenko, E. N. Utkin, A. A. Stolpovsky, G. A. Kashcheeva, I. V. Filimonenko, and S. V. Khabarov "Principles of active interferometry with a frequency bias applied to the Doppler anemometry", Proc. SPIE 6262, Optical Methods of Flow Investigation, 626202 (10 June 2006); https://doi.org/10.1117/12.682918

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