Stand-off explosive sensing and imaging with scanning dual-comb spectrometer

John Macarthur; Jakob Hayden; Matthew S. Warden; Christopher Carson; David M. Stothard; Raphael Horvath; Florian Eigenmann; Markus Geiser; Vasili G. Savitski

doi:10.1117/12.2616668

30 May 2022 Stand-off explosive sensing and imaging with scanning dual-comb spectrometer

John Macarthur, Jakob Hayden, Matthew S. Warden, Christopher Carson, David M. Stothard, Raphael Horvath, Florian Eigenmann, Markus Geiser, Vasili G. Savitski

Author Affiliations +

Proceedings Volume 12116, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIII; 1211604 (2022) https://doi.org/10.1117/12.2616668
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

A proof-of-concept of a scanning stand-off dual-comb spectrometer for explosives detection and identification at 3 m distance is demonstrated. Detection of two types of explosives: RDX and PETN on various surfaces was carried out in reflection-absorption and backscattering modes. A scanning area of 18 cm X 18 cm (400 pixels) was covered in ~2.5 sec. Identification method was based on Pearson’s correlation coefficients between the recorded reflection-absorption (backscatter reflection) spectra and transmission (reflection) FTIR of substances, with baseline subtraction using the asymmetric least square smoothing algorithm. Detection limits of the laboratory system of < 2 ug/cm² were achieved.

Conference Presentation

Citation Download Citation

John Macarthur, Jakob Hayden, Matthew S. Warden, Christopher Carson, David M. Stothard, Raphael Horvath, Florian Eigenmann, Markus Geiser, and Vasili G. Savitski "Stand-off explosive sensing and imaging with scanning dual-comb spectrometer", Proc. SPIE 12116, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIII, 1211604 (30 May 2022); https://doi.org/10.1117/12.2616668

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