New approach for detection and identification of substances using  THz TDS

Vyacheslav A. Trofimov; Irina G. Zakharova; Dmitry Yu. Zagursky; Svetlana A. Varentsova

doi:10.1117/12.2280531

5 October 2017 New approach for detection and identification of substances using THz TDS

Vyacheslav A. Trofimov, Irina G. Zakharova, Dmitry Yu. Zagursky, Svetlana A. Varentsova

Proceedings Volume 10441, Counterterrorism, Crime Fighting, Forensics, and Surveillance Technologies; 1044107 (2017) https://doi.org/10.1117/12.2280531
Event: SPIE Security + Defence, 2017, Warsaw, Poland

Abstract

We propose and discuss new effective approach for the detection and identification of substances using a THz TDS. It consists in using a substance emission at high frequencies corresponding to high energy levels relaxation due to cascade mechanism of their excitation under the broadband THz pulse action. The second approach is based on a possibility of observing the absorption frequencies of substance under the frequency up-conversion. To explain a physical mechanism of considered possibilities we make a computer simulation using 1D Maxwell's equations and density matrix formalism.

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Citation Download Citation

Vyacheslav A. Trofimov, Irina G. Zakharova, Dmitry Yu. Zagursky, and Svetlana A. Varentsova "New approach for detection and identification of substances using THz TDS ", Proc. SPIE 10441, Counterterrorism, Crime Fighting, Forensics, and Surveillance Technologies, 1044107 (5 October 2017); https://doi.org/10.1117/12.2280531

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