29 April 2010 Compact diode laser homodyne vibrometers
Author Affiliations +
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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christian J. Grund, Harald Guenther, John Connolly, "Compact diode laser homodyne vibrometers", Proc. SPIE 7684, Laser Radar Technology and Applications XV, 76840V (29 April 2010); doi: 10.1117/12.850591; https://doi.org/10.1117/12.850591
PROCEEDINGS
8 PAGES


SHARE
Back to Top