Abstract

Using inverse Raman spectroscopy (IRS), we directly measured two perpendicular velocity components by crossing two probe laser beams symmetrically with the pump laser beam. Because of the crossing, the spatial resolution was improved by more than 1 order of magnitude compared with that obtained with previous IRS measurements. This made it possible to map out the planar velocity and temperature distributions in a supersonic N2 jet. The measured distributions are in good agreement with theoretical calculations. Extension to the measurement of all three velocity components is discussed.

© 1984 Optical Society of America

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