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Updated: Jun 16, 2026

High-speed Particle Image Velocimetry Near Surfaces
Published on: June 24, 2013
Two-component, self-aligning laser vector velocimeter
Abstract:
A newly developed laser Doppler velocimeter is described. The basic optical component of the instrument is a two-dimensional ultrasonic Bragg cell. It is shown that use of this Bragg cell simplifies the optics usually required for the more conventional velocimeters, allows measurement of two-vector components of velocity, requires no adjustment of alignment mirrors, and enables both velocity component signals to be detected with a single detector. Some results from experiments using this velocimeter in an atmospheric application are described.
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