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Proceedings Paper

Measurement of velocities by backscatter modulation in semiconductor injection lasers
Author(s): Elizabeth A. Callan; John Gerard McInerney
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Paper Abstract

The background theory of backscatter modulation and velocimetry using laser diodes is presented together with an experimental demonstration of the application of these laser diodes in laser Doppler velocimetry (LDV). The sensitivity of the laser diode system to backscatter from a diffusely reflecting target is greater than -60 dB. Tests of an LDV system using a moving air mass as the target are described. Possible applications of these systems include airspeed measurements, collision avoidance, and tracking distant objects.

Paper Details

Date Published: 26 June 1992
PDF: 11 pages
Proc. SPIE 1634, Laser Diode Technology and Applications IV, (26 June 1992); doi: 10.1117/12.59182
Show Author Affiliations
Elizabeth A. Callan, Univ. of New Mexico (United States)
John Gerard McInerney, Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 1634:
Laser Diode Technology and Applications IV
Daniel S. Renner, Editor(s)

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