Detection of covered materials in the TDS-THz setup

Proc. SPIE 8716, Terahertz Physics, Devices, and Systems VII: Advanced Applications in Industry and Defense, 871608 (May 31, 2013); 
doi:10.1117/12.2015373

Authors:
Norbert Palka
Military Univ. of Technology (Poland)

More details at: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1693464

Abstract

We report on a new method for extracting the characteristic features of covered materials, including Hexogen, in the range 0.5–1.8 THz. This time domain spectroscopy-based technique takes into account only part of the signal reflected from a covered sample, and analyzes it by Fourier transform. The obtained power spectrum has distinctive peaks that correspond to peaks measured in the transmission configuration and can be applied for further identification. We showed results obtained for the samples of hexogen, lactose, and tartaric acid covered with commonly used packaging materials such as plastic, foil, paper and cotton. © (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Topics
Fourier transforms ; Packaging ; Spectroscopy ; Terahertz radiation

In 2011 TeraView supplied two TPS Spectra 3000 systems with a stand-off explosives detection module and a fibre-fed scanning system with multiple gantry options for research into terahertz imaging and non-destructive testing. Military University of Technology (MUT) in Poland is one of the country’s most prestigious research institutes for terahertz research and materials characterisation. Read more...