Design of fiber optic beam delivery system for particle image velocimetry

Russell Dudley Morgan; David Andersen; Julian D. C. Jones; William J. Easson; Clive A. Greated

doi:10.1117/12.150564

6 August 1993 Design of fiber optic beam delivery system for particle image velocimetry

Russell Dudley Morgan, David Andersen, Julian D. C. Jones, William J. Easson, Clive A. Greated

Proceedings Volume 2052, Fifth International Conference on Laser Anemometry: Advances and Applications; (1993) https://doi.org/10.1117/12.150564
Event: Laser Anemometry: Advances and Applications: Fifth International Conference, 1993, Koningshof, Veldhoven, Netherlands

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%.

Citation Download Citation

Russell Dudley Morgan, David Andersen, Julian D. C. Jones, William J. Easson, and Clive A. Greated "Design of fiber optic beam delivery system for particle image velocimetry", Proc. SPIE 2052, Fifth International Conference on Laser Anemometry: Advances and Applications, (6 August 1993); https://doi.org/10.1117/12.150564

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