Photoacoustic laser Doppler velocimetry using the self-mixing effect of CO2 laser

Jong-Woon Choi; Moon-Jong Yu; Mirek Kopica

doi:10.1117/12.510201

12 January 2004 Photoacoustic laser Doppler velocimetry using the self-mixing effect of CO₂ laser

Jong-Woon Choi, Moon-Jong Yu, Mirek Kopica

Proceedings Volume 5240, Laser Radar Technology for Remote Sensing; (2004) https://doi.org/10.1117/12.510201
Event: Remote Sensing, 2003, Barcelona, Spain

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.

Citation Download Citation

Jong-Woon Choi, Moon-Jong Yu, and Mirek Kopica "Photoacoustic laser Doppler velocimetry using the self-mixing effect of CO₂ laser", Proc. SPIE 5240, Laser Radar Technology for Remote Sensing, (12 January 2004); https://doi.org/10.1117/12.510201

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