Design of fibre optic beam delivery system for particle image velocimetry

R. D. Morgan, D. J. Anderson, J. D C Jones, W. Easson, C. Greated

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We demonstrate the design of a fibre 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 fibre used has a fused silica core of diameter 400 µm, and is of the step index multimode type. The output beam quality is 800 mm-mrad. Through exploitation of intermodal dispersion in the fibre, intensity variations in the output from the fibre due to speckle are suppressed to a visibility of <7%.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages675-682
Number of pages8
Volume2052
Publication statusPublished - 1993
EventFifth International Conference on Laser Anemometry - Koningshof, Veldhoven, Neth
Duration: 23 Aug 199327 Aug 1993

Conference

ConferenceFifth International Conference on Laser Anemometry
CityKoningshof, Veldhoven, Neth
Period23/08/9327/08/93

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  • Cite this

    Morgan, R. D., Anderson, D. J., Jones, J. D. C., Easson, W., & Greated, C. (1993). Design of fibre optic beam delivery system for particle image velocimetry. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2052, pp. 675-682)