Intracavity Rayleigh-Mie scattering for multipoint, two-component velocity measurement | Zendy

Daniel Bivolaru | Zendy; Paul M. Danehy | Zendy; Joseph W. Lee | Zendy

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Intracavity Rayleigh-Mie scattering for multipoint, two-component velocity measurement

Author(s) -

Daniel Bivolaru,

Paul M. Danehy,

Joseph W. Lee

Publication year - 2006

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.31.001645

Subject(s) - optics , fabry–pérot interferometer , rayleigh scattering , interferometry , physics , mie scattering , light scattering , doppler effect , jet (fluid) , scattering , laser , astronomy , thermodynamics

A simultaneous multipoint, two-component Doppler velocimeter is described. The system uses two optical cavities: a Fabry-Perot etalon and an optical cavity for collecting and recirculating the Rayleigh-Mie-scattered light that is collected from the measurement volume in two parallel but opposite directions. Single-pulse measurements of two orthogonal components of the velocity vector in a supersonic free jet were performed to demonstrate the technique. The recirculation of the light rejected by the interferometer input mirror also increased the signal intensity by a factor of 3.5.

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