Title :
Low spatial coherence interferometer for high resolved velocity measurements with passive directional discrimination
Author :
Buttner, L. ; Czarske, Jürgen
Author_Institution :
Laser Zentrum Hannover e.V., Germany
Abstract :
The visibility of the interference pattern of a Mach-Zehnder-interferometer is investigated in dependence of the spatial coherence. It is demonstrated how the dimensions of the fringe pattern can be shortened significantly due to the low coherence properties. Applications of spatial high resolved velocity measurements in fluid flows are given.
Keywords :
Mach-Zehnder interferometers; laser Doppler anemometry; light coherence; moire fringes; Mach-Zehnder-interferometer; fluid flows; fringe pattern; high resolved velocity measurement; interference pattern; passive directional discrimination; spatial coherence interferometer; visibility; Fluid flow; Fluid flow measurement; Interference; Laser modes; Linear discriminant analysis; Size measurement; Spatial coherence; Spatial resolution; Velocity measurement; Volume measurement;
Conference_Titel :
Lasers and Electro-Optics, 2003. CLEO '03. Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-748-2
