Spatially resolved flow velocity measurements using laser-induced fluorescence from a pulsed laser

Abstract

We describe how spatially resolved velocity measurements can be acquired using a pulse-amplified single-mode cw laser with a potential of single-shot measurements. The laser beam was tuned to the point of maximum slope of a Doppler-broadened absorption profile of I₂, which was seeded into the flow. The beam was then split into two components and sent counterpropagating through the measurement region. By diode-array detection of the laser-induced fluorescence from I₂, spatially and temporally resolved velocities can be acquired.

© 1989 Optical Society of America

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