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Proceedings Paper

Chemical detection using broadband femtosecond optical parametric oscillators in the 6-12-micron spectral fingerprint region
Author(s): D. T. Reid; O. Kara; M. Rutkauskas; L. Maidment
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Paper Abstract

The broad and slowly varying spectral features of liquids and solids require broadband sources in the mid- to long-wave infrared for their detection and identification. We present here a range of measurements made using uniquely tunable femtosecond optical parametric oscillators, which have enabled stand-off Fourier-transform spectroscopy to be implemented across a large part of the spectral fingerprint region. In this way we have achieved active stand-off detection of liquids on surfaces, of powders and of airborne liquid particles in aerosol form. We discuss the optical parametric oscillator technology, the spectroscopy implementations and the detection capabilities and limitations of the techniques.

Paper Details

Date Published: 14 May 2018
PDF: 7 pages
Proc. SPIE 10639, Micro- and Nanotechnology Sensors, Systems, and Applications X, 106392D (14 May 2018); doi: 10.1117/12.2305129
Show Author Affiliations
D. T. Reid, Heriot-Watt Univ. (United Kingdom)
O. Kara, Heriot-Watt Univ. (United Kingdom)
M. Rutkauskas, Heriot-Watt Univ. (United Kingdom)
L. Maidment, Chromacity Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 10639:
Micro- and Nanotechnology Sensors, Systems, and Applications X
Thomas George; Achyut K. Dutta; M. Saif Islam, Editor(s)

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