5 Component Fiber-Optic LDA System

Located in 15A Randolph Hall

Developed by Dr. R. L. Simpson and Dr. S. Olcmen

Used in turbulent boundary layer research under sponsorship from


1. Probe head used align and project the laser beams into the flow
2. The probe head in operation showing the laser beams being directed through the wind tunnel floor.
3. Beams emerging from the wind tunnel floor and crossing at the measurement volume.
(Note the additional mirrors used to direct beams across the floor.)
4. Optical table containing the laser tubes, Bragg cells,  mirrors and fiber couplers.
5. Optical table in operation showing the laser-beam paths.
6. Schematics of the probe assembly.
7. Other Views