A stand-off scanning dual comb spectroscopy of explosive materials is demonstrated with quantum cascade lasers at ~ 8 um. The proof-of-concept of the spectrometer, capable of the detection and identification of explosive materials at distance of 3 m, has a detection limit of cyclotrimethylenetrinitramine (RDX) and pentaerythritol tetranitrate (PETN) on various surfaces of 5-8 ug/cm2 in scanning regime and 2-3 ug/cm2 with stationary beam in reflection-absorption and backscattering modes.

7 October 2021 – 5:00 pm CET

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Speakers

Jakob Hayden

Jakob received his PhD from TU Wien (Austria) where he studied cavity enhanced spectroscopy for trace gas sensing applications in the group of Bernhard Lendl. He joined IRsweep in 2020 and works as an R&D and application engineer under a Marie-Sklodowska-Curie-fellowship.

Vasili Savitski

Vasili G. Savitski received the Engineering Diploma in optics from the Belarus National Technical University, Minsk, in 1999, and the Ph.D. degree from the Institute of Physics, Belarus, in 2005 for work on the nonlinear optics of quantum dots in glasses. He worked at the International Laser Center, Minsk on the nonlinear optics of quantum dots, passive mode locking and thermal effects in lasers from 1999 to 2007. Between 2008 and 2019, he was with the Institute of Photonics, University of Strathclyde, Glasgow, working in the field of diamond photonics. From 2020 he is with the Fraunhofer Centre for Applied Photonics (Glasgow), where he studies novel laser sources and techniques for optical sensing.