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Proceedings Paper

Laser Doppler velocimetry using photo-acoustic effect of CO2 laser
Author(s): Jong-Woon Choi; Moon-Jong Yu; Mirek Kopica
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Paper Abstract

A new laser Doppler velocimeter employing a CO2 laser has been developed by using its photoacoustic effect. A change of the pressure of a laser discharge tube, induced by mixing of a returned wave with an originally existing wave inside the cavity, is employed to detect the Doppler frequency shift. We found that a Doppler frequency shift as much as 60 kHz was detected, and as well as a good linear relationship between the velocity and the Doppler frequency shift was obtained.

Paper Details

Date Published: 10 November 2003
PDF: 4 pages
Proc. SPIE 5191, Optical Diagnostics for Fluids, Solids, and Combustion II, (10 November 2003); doi: 10.1117/12.510205
Show Author Affiliations
Jong-Woon Choi, Honam Univ. (South Korea)
Moon-Jong Yu, Honam Univ. (South Korea)
Mirek Kopica, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 5191:
Optical Diagnostics for Fluids, Solids, and Combustion II
Patrick V. Farrell; Fu-Pen Chiang; Carolyn R. Mercer; Gongxin Shen, Editor(s)

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