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Non-Mechanical Dual-Axis Scanning Laser Doppler Velocimeter

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1 Author(s)
Maru, K. ; Fac. of Eng., Kagawa Univ., Kagawa, Japan

A dual-axis scanning laser Doppler velocimeter (LDV) without any moving mechanism in its sensor probe is proposed. In this LDV, the measurement position is scanned in both axial and transversal directions with one probe. The direction of the scan is changed by changing the polarization of the beam input to the probe. The results of the experiment using a setup of the sensor probe consisting of bulk optical components indicate that the measurement position can be successfully scanned in both axial and transversal directions. The scan ranges are estimated to be 54.8 mm over the wavelength range of 20 nm for axial scan and 20.8 mm over the wavelength range of 32 nm for transversal scan.

Published in:

Sensors Journal, IEEE  (Volume:12 ,  Issue: 8 )