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Measurement of flow vorticity with helical beams of light

Autor
Belmonte, A.; Rosales, C.; Torres, J.
Tipus d'activitat
Article en revista
Revista
Optica
Data de publicació
2015-11-20
Volum
2
Número
11
Pàgina inicial
1002
Pàgina final
1005
DOI
https://doi.org/10.1364/OPTICA.2.001002 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/81167 Obrir en finestra nova
URL
https://www.osapublishing.org/optica/abstract.cfm?uri=optica-2-11-1002 Obrir en finestra nova
Resum
It is possible to devise an experiment in which the local vorticity of a flow can be estimated by probing the fluid with Laguerre–Gauss (LG) beams, i.e., optical beams that show an azimuthal phase variation that is the origin of its characteristic nonzero orbital angular momentum. The key point is to make use of the transversal Doppler effect of the returned signal that depends only on the azimuthal component of the flow velocity along the ring-shaped observation beam. We found from a detailed...
Citació
Belmonte, A., Rosales, C., Torres, J. Measurement of flow vorticity with helical beams of light. "Optica", 20 Novembre 2015, vol. 2, núm. 11, p. 1002-1005.
Paraules clau
Atmospheric and oceanic optics, Flow diagnostics, Laser Doppler velocimetry, Medical and biological imaging, Optical sensing and sensors, Turbulence
Grup de recerca
RSLAB - Grup de Recerca en Teledetecció

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