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New approach for detection and identification of substances using THz TDS
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Paper 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.

Paper Details

Date Published: 5 October 2017
PDF: 21 pages
Proc. SPIE 10441, Counterterrorism, Crime Fighting, Forensics, and Surveillance Technologies, 1044107 (5 October 2017); doi: 10.1117/12.2280531
Show Author Affiliations
Vyacheslav A. Trofimov, M.V. Lomonosov Moscow State Univ. (Russian Federation)
Irina G. Zakharova, M.V. Lomonosov Moscow State Univ. (Russian Federation)
Dmitry Yu. Zagursky, M.V. Lomonosov Moscow State Univ. (Russian Federation)
Svetlana A. Varentsova, M.V. Lomonosov Moscow State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 10441:
Counterterrorism, Crime Fighting, Forensics, and Surveillance Technologies
Henri Bouma; Felicity Carlysle-Davies; Robert James Stokes; Yitzhak Yitzhaky, Editor(s)

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