Stand-off explosive sensing and imaging with scanning dual-comb IR spectrometer: extended spectral range and speckle management

Vasili Savitski; Jakob Hayden; James Feehan; Roman Spesyvtsev; Raphael Horvath; Markus Geiser; Kerry Alton; Peter Glover; Lauren Holley; Jayne Newton; Chris Howle; Michael Papantonakis; Andrew McGill; Viet Nguyen; Paulina Moussavi; Thoi Nguyen

doi:10.1117/12.2666007

14 June 2023 Stand-off explosive sensing and imaging with scanning dual-comb IR spectrometer: extended spectral range and speckle management

Vasili Savitski, Jakob Hayden, James Feehan, Roman Spesyvtsev, Raphael Horvath, Markus Geiser, Kerry Alton, Peter Glover, Lauren Holley, Jayne Newton, Chris Howle, Michael Papantonakis, Andrew McGill, Viet Nguyen, Paulina Moussavi, Thoi Nguyen

Author Affiliations +

Proceedings Volume 12541, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIV; 125410D (2023) https://doi.org/10.1117/12.2666007
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

The progress in development of a dual-comb spectrometer for detection of traces of explosives at stand-off distances is reported. The spectral range of the spectrometer was extended to 1205-1305 cm-1, the stand-off distance was shortened to 0.5 m to access more potential use-cases, and the speckle contrast was decreased to 0.3%. Tests of the dual-comb spectrometer on RDX and PETN deposited on glass surfaces with a surface concentration of ~10 g/cm2 deposited using a sieving method will be presented and compared with the measurements carried out using a laboratory grade FTIR instrument.

Conference Presentation

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Vasili Savitski, Jakob Hayden, James Feehan, Roman Spesyvtsev, Raphael Horvath, Markus Geiser, Kerry Alton, Peter Glover, Lauren Holley, Jayne Newton, Chris Howle, Michael Papantonakis, Andrew McGill, Viet Nguyen, Paulina Moussavi, and Thoi Nguyen "Stand-off explosive sensing and imaging with scanning dual-comb IR spectrometer: extended spectral range and speckle management", Proc. SPIE 12541, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIV, 125410D (14 June 2023); https://doi.org/10.1117/12.2666007

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