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Proceedings Paper

Compact diode laser homodyne vibrometers
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Paper Abstract

We discuss the architecture and performance of compact, robust, alignment-free, homodyne vibrometers using telecom diode lasers as the illumination source. The technical challenges and performance of implementations using conventional macroscopic optical components are compared with ultra-miniature micro-bench components and assembly methods. Focused sensitivity exceeding 4.6 pm/SQRT(Hz) at 1m range, 23 pm/SQRT(Hz) at 5m range, and useful operation to >20m have been demonstrated with COTS 1550 nm sources, 1.5 cm transmit/receive beam diameter and 32 mW transmitted power. Vibrometer measurement bandwidth exceeds 100 kHz with current electronics. Demonstrated performance is suitable for a variety of defense, security, and inspection applications.

Paper Details

Date Published: 29 April 2010
PDF: 8 pages
Proc. SPIE 7684, Laser Radar Technology and Applications XV, 76840V (29 April 2010); doi: 10.1117/12.850591
Show Author Affiliations
Christian J. Grund, LightWorks, LLC (United States)
Harald Guenther, Innovative Photonic Solutions (United States)
John Connolly, Innovative Photonic Solutions (United States)

Published in SPIE Proceedings Vol. 7684:
Laser Radar Technology and Applications XV
Monte D. Turner; Gary W. Kamerman, Editor(s)

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