25 September 1995 Temperature profile measurement with a multiple-pass laser beam deflection probe
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Proceedings Volume 2510, Fiber Optic and Laser Sensors XIII; (1995) https://doi.org/10.1117/12.221710
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany
Abstract
We report noncontact measurement of temperature profiles in fluids by means of a novel laser beam deflection probe. We use optoacoustic generation by a pulsed Nd:YAG laser to emit a short acoustic transient wave within the fluid region under study. Propagation region several times before it reaches the deflection-detecting photodetector. A single oscilloscope trace of the photodetector output gives us then the timing of the acoustic wavefront at several distances from the source. By measuring the acoustic wavefront transit times and the distance between the probe beam segments we can determine local sound velocity and there from the local temperature.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Janez Diaci, Janez Diaci, Janez Ivan Mozina, Janez Ivan Mozina, } "Temperature profile measurement with a multiple-pass laser beam deflection probe", Proc. SPIE 2510, Fiber Optic and Laser Sensors XIII, (25 September 1995); doi: 10.1117/12.221710; https://doi.org/10.1117/12.221710
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