Terahertz spectral signatures of explosive materials and precursors

Christopher D. Ball; T. J. Ronningen; Lee C. Oesterling

doi:10.1117/12.822005

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6 May 2009 Terahertz spectral signatures of explosive materials and precursors

Christopher D. Ball, T. J. Ronningen, Lee C. Oesterling

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Proceedings Volume 7324, Atmospheric Propagation VI; 73240Z (2009) https://doi.org/10.1117/12.822005
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

Terahertz (THz) spectral signatures have been measured for a variety of explosive materials and precursors. These signatures were measured by THz Time Domain Spectroscopy, using ultrashort pulsed lasers coupled with electro-optic materials to generate and detect THz radiation. Transmission and reflection spectra were measured across a frequency range from 0.2 to 2.5 THz for solid and liquid materials. These spectra are reported in terms of index of refraction and absorption coefficient, both of which can be calculated from transmission or reflection data. The value of THz spectral signatures for the development of future explosives sensing systems is discussed.

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Christopher D. Ball, T. J. Ronningen, and Lee C. Oesterling "Terahertz spectral signatures of explosive materials and precursors", Proc. SPIE 7324, Atmospheric Propagation VI, 73240Z (6 May 2009); https://doi.org/10.1117/12.822005

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