10 November 2003 Laser Doppler velocimetry using photo-acoustic effect of CO2 laser
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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.
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Jong-Woon Choi, Jong-Woon Choi, Moon-Jong Yu, Moon-Jong Yu, Mirek Kopica, Mirek Kopica, } "Laser Doppler velocimetry using photo-acoustic effect of CO2 laser", Proc. SPIE 5191, Optical Diagnostics for Fluids, Solids, and Combustion II, (10 November 2003); doi: 10.1117/12.510205; https://doi.org/10.1117/12.510205

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