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Proceedings Paper

Laser vibration sensor
Author(s): Madhu A. Acharekar; Philip Gatt; Lawrence J. Mizerka
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Paper Abstract

An eye safe Ho:YAG laser operating cw at 2.09 micrometers was used as the transmitter for this laser radar (ladar) system. The diode pumped Ho:YAG laser provided up to 100 mW of single frequency output power. An InGaAs detector was selected as the off-set homodyne receiver for vibration signatures. This paper describes the design and characteristics of the laser vibration sensor that is based on laser Doppler radar. Initially, the sensor was calibrated using a piezoelectric loudspeaker, then vibrational signatures were obtained for automobiles having four and eight cylinder engines. This two micron laser Doppler radar permitted high- resolution vibrational signatures detection, remotely, at ranges up to 50 meters.

Paper Details

Date Published: 16 June 1995
PDF: 10 pages
Proc. SPIE 2472, Applied Laser Radar Technology II, (16 June 1995); doi: 10.1117/12.212015
Show Author Affiliations
Madhu A. Acharekar, Schwartz Electro-Optics, Inc. (United States)
Philip Gatt, CREOL/Univ. of Central Florida (United States)
Lawrence J. Mizerka, U.S. Army Night Vision & Electronic Sensors Directorate (United States)

Published in SPIE Proceedings Vol. 2472:
Applied Laser Radar Technology II
Gary W. Kamerman, Editor(s)

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