Abstract
The article considers the possibility of constructing laser Doppler velocity vector meters based on a bichromatic source of spatially combined Gaussian or Bessel beams, the two-wave single-channel Bragg acousto-optic modulator with a ratio of ultrasonic wave frequencies equal to the ratio of the wave numbers of diffracted laser beams. The spatial, chromatic, and frequency structure of the 3D coordinate-measuring basis formed from the Gaussian or Bessel beams by the same sequence of optical elements and the photoelectric conversion adequate to the structure of light scattered by the investigated medium provide the minimum hardware Doppler spectrum width and increased noise immunity.
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REFERENCES
Y. Yeh and H. Z. Cummins, ‘‘Localized fluid flow measurements with an He–Ne laser spectrometer,’’ Appl. Phys. Lett. 4, 176–178 (1964). doi 10.1063/1.1753925
Yu. G. Vasilenko, Yu. N. Dubnishchev, V. P. Koronkevich, et al., Laser Doppler Velocity Meters (Nauka, Novosibirsk, 1975).
Yu. N. Dubnishchev and B. S. Rinkevichyus, Methods of Laser Doppler Anemometry (Nauka, Moscow, 1982).
L. E. Drain, The Laser Doppler Technique (John Wiley & Sons, New York, 1980).
Yu. Dubnishchev, V. A. Arbuzov, P. P. Belousov, and P. Ya. Belousov, Optical Methods of Flow Investigation, (Sibirskoe Univ. Izd., Novosibirsk, 2003).
H. Albrect, M. Bours, N. Damaschke, and C. Tropea, Laser Doppler and Phase Doppler Techniques Measurement (Springer-Verlag, Berlin, 2013).
H.-J. Pfeifer, ‘‘Method for the simultaneous measurement of three velocity components by means of laser doppler anemometry,’’ US Patent No. 4838687 (A) (13 June 1989).
Dantec Dynamics, ‘‘Dynamics’ laser optical measurement systems,’’ https://www.dantecdynamics.com/solutions-applications/solutions/fluid-mechanics/laser-doppler-anemometry-lda/. Cited June 4, 2020.
TSI Incorporated, https://tsi.com/products/fluid-mechanics-systems/laser-doppler-(ldv)-systems/. Cited June 4, 2020.
S. Ristić, ‘‘Laser doppler anemometry and its application in wind tunnel tests,’’ Sci. Tech. Rev. 57 (3-4), 64–75 (2007).
A. V. Klimov, S. V. Dvoinishnikov, V. G. Meledin, D. V. Kulikov, S. V. Krotov, and I. V. Shchepikhin, ‘‘Determination of the three-dimensional velocity vector using the laser doppler measurements of unevenly sampled components,’’ Optoelectron., Instrum. Data Process. 53, 216–222 (2017). https://doi.org/10.3103/S8756699017030037
A. Voight, S. Heitkam, L. Büttner, and J. Czarske, ‘‘A Bessel beam laser Doppler velocimeter,’’ Opt. Commun. 282, 1874–1878 (2009). https://doi.org/10.1016/j.optcom.2009.01.044
Yu. N. Dubnishchev and A. F. Shibaev, RF Patent No. 2638580, Byull. No. 35 (2016).
Yu. N. Dubnishchev and V. G. Nechaev, RF Patent No. 2707957, Byull. No. 34 (2019).
Funding
This work was supported by the State Task, project no. AAAA-A17-117030310010-9.
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Translated by O. Pismenov
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Dubnishchev, Y.N., Dubnishcheva, T.Y. & Nechaev, V.G. Bichromatic Laser Doppler Velocity Vector Meter. Optoelectron.Instrument.Proc. 56, 333–339 (2020). https://doi.org/10.3103/S8756699020040056
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DOI: https://doi.org/10.3103/S8756699020040056