In this paper we present a laser spectroscopy system designed for application in standoff chemical detection. The system is based on a dispersion sensing approach which provides high immunity to amplitude noise and optical power fluctuations. It is well suited for industrial applications (e.g. leak detection) as well as for environmental monitoring (e.g. measuring emissions from distributed sources like wetlands or water reservoirs using single instrument that covers large area with path-integrated detection). A detailed system configuration is presented. Feasibility of standoff gas detection using laser dispersion spectrometer with scattering optical targets is demonstrated.

Date Published: 13 May 2015
PDF: 6 pages
Proc. SPIE 9486, Advanced Environmental, Chemical, and Biological Sensing Technologies XII, 94860M (13 May 2015); doi: 10.1117/12.2176966

Published in SPIE Proceedings Vol. 9486:
Advanced Environmental, Chemical, and Biological Sensing Technologies XII
Tuan Vo-Dinh; Robert A. Lieberman; Günter G. Gauglitz, Editor(s)