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Proceedings Paper

Component pattern analysis of chemicals using multispectral THz imaging system
Author(s): Kodo Kawase; Yuichi Ogawa; Yuki Watanabe
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Paper Abstract

We have developed a novel basic technology for terahertz (THz) imaging, which allows detection and identification of chemicals by introducing the component spatial pattern analysis. The spatial distributions of the chemicals were obtained from terahertz multispectral transillumination images, using absorption spectra previously measured with a widely tunable THz-wave parametric oscillator. Further we have applied this technique to the detection and identification of illicit drugs concealed in envelopes. The samples we used were methamphetamine and MDMA, two of the most widely consumed illegal drugs in Japan, and aspirin as a reference.

Paper Details

Date Published: 8 April 2004
PDF: 8 pages
Proc. SPIE 5354, Terahertz and Gigahertz Electronics and Photonics III, (8 April 2004); doi: 10.1117/12.528517
Show Author Affiliations
Kodo Kawase, RIKEN - The Institute of Physical and Chemical Research (Japan)
Yuichi Ogawa, RIKEN - The Institute of Physical and Chemical Research (Japan)
Yuki Watanabe, RIKEN - The Institute of Physical and Chemical Research (Japan)


Published in SPIE Proceedings Vol. 5354:
Terahertz and Gigahertz Electronics and Photonics III
R. Jennifer Hwu, Editor(s)

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