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Proceedings Paper

Design of fiber optic beam delivery system for particle image velocimetry
Author(s): Russell Dudley Morgan; David Andersen; Julian D. C. Jones; William J. Easson; Clive A. Greated
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Paper Abstract

We demonstrate the design of a fiber optic beam delivery system for particle image velocimetry (PIV) applications. The system is capable of transmitting pulse energies of about 10 mJ in 7 ns pulses from a frequency doubled and Q-switched Nd:YAG laser; it is hence suitable for use with high speed air flows. The fiber used has a fused silica core of diameter 400 micrometers , and is of the step index multimode type. The output beam quality is 80 mm- mrad. Through exploitation of intermodal dispersion of the fiber, intensity variations in the output from the fiber due to speckle are suppressed to a visibility of < 7%.

Paper Details

Date Published: 6 August 1993
PDF: 8 pages
Proc. SPIE 2052, Fifth International Conference on Laser Anemometry: Advances and Applications, (6 August 1993); doi: 10.1117/12.150564
Show Author Affiliations
Russell Dudley Morgan, Heriot-Watt Univ. (United Kingdom)
David Andersen, Heriot-Watt Univ. (United Kingdom)
Julian D. C. Jones, Heriot-Watt Univ. (United Kingdom)
William J. Easson, Univ. of Edinburgh (United Kingdom)
Clive A. Greated, Univ. of Edinburgh (United Kingdom)


Published in SPIE Proceedings Vol. 2052:
Fifth International Conference on Laser Anemometry: Advances and Applications

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