A Miniature Laser Velocimeter For Use In High Pressure And Vibration Conditions

R. G. W. Brown; J. G. Burnett; J. Mansbridge; C. J. Moir

doi:10.1117/12.969713

1 April 1990 A Miniature Laser Velocimeter For Use In High Pressure And Vibration Conditions

R. G. W. Brown, J. G. Burnett, J. Mansbridge, C. J. Moir

Proceedings Volume 1191, Optical Systems for Space and Defence; (1990) https://doi.org/10.1117/12.969713
Event: SIRA/Optical Systems for Space and Defence, 1989, London, United Kingdom

Abstract

The sizes, costs and fragility of gas lasers and photomultipliers have limited the applications of laser anemometry. Following our recent work with miniature all-solid-state laser anemometers*, we will describe a system for use in confined spaces in hostile environments. In particular we have been concerned with pressures to 25 Bar and high vibration. Operation range is up to 0.5m and with flow velocities up to 20ms-1, useful in many hydrodynamic studies. The velocimeter is packaged in a stainless steel cylindrical canister with an end-face optical port. Particular care is needed in the coupling of these two components. Problems of traversing the measurement volume, aberration-correction and calibration are central to its successful operation.

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R. G. W. Brown, J. G. Burnett, J. Mansbridge, and C. J. Moir "A Miniature Laser Velocimeter For Use In High Pressure And Vibration Conditions", Proc. SPIE 1191, Optical Systems for Space and Defence, (1 April 1990); https://doi.org/10.1117/12.969713

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KEYWORDS

Laser applications

Defense and security

Roads

Calibration

Gas lasers

Photomultipliers

Astronomical imaging

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