Abstract

The availability of two-dimensional detector arrays has led to a new class of diagnostic techniques for probing gaseous flowfields. These techniques utilize sheet lighting of the flowfield with tunable laser sources and detection of scattered light from the illuminated plane with the 2-d detector. The intensity of scattered light recorded at each detector pixel can be related to relevant flowfield properties at the point in the illumination plane imaged by that pixel, so that the overall recording may be viewed as a 2-d image of the flowfield property studied. Thus far, flowfield imaging has been carried out using Mie scattering from particles or droplets and using molecular scattering based on laser-induced fluorescence, Rayleigh and Raman scattering.

© 1987 Optical Society of America