Stand-off detection of aerosols using mid-infrared backscattering Fourier transform spectroscopy

L. Maidment; Z. Zhang; M. D. Bowditch; C. R. Howle; D. T. Reid

doi:10.1117/12.2241052

24 October 2016 Stand-off detection of aerosols using mid-infrared backscattering Fourier transform spectroscopy

L. Maidment, Z. Zhang, M. D. Bowditch, C. R. Howle, D. T. Reid

Proceedings Volume 9995, Optics and Photonics for Counterterrorism, Crime Fighting, and Defence XII; 999508 (2016) https://doi.org/10.1117/12.2241052
Event: SPIE Security + Defence, 2016, Edinburgh, United Kingdom

Abstract

The spectrum of mid-infrared light scattered from an actively illuminated aerosol was used to distinguish between different chemicals. Using spectrally broad illumination from an optical parametric oscillator covering 3.2 – 3.55 μm, characteristic absorption features of two different chemicals were detected, and two similar molecules were clearly distinguished using the spectra of backscattered light from each chemical aerosol.

Citation Download Citation

L. Maidment, Z. Zhang, M. D. Bowditch, C. R. Howle, and D. T. Reid "Stand-off detection of aerosols using mid-infrared backscattering Fourier transform spectroscopy", Proc. SPIE 9995, Optics and Photonics for Counterterrorism, Crime Fighting, and Defence XII, 999508 (24 October 2016); https://doi.org/10.1117/12.2241052

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