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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 11, Iss. 20 — Oct. 6, 2003
  • pp: 2549–2554

Non-destructive terahertz imaging of illicit drugs using spectral fingerprints

Kodo Kawase, Yuichi Ogawa, Yuuki Watanabe, and Hiroyuki Inoue  »View Author Affiliations

Optics Express, Vol. 11, Issue 20, pp. 2549-2554 (2003)

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The absence of non-destructive inspection techniques for illicit drugs hidden in mail envelopes has resulted in such drugs being smuggled across international borders freely. We have developed a novel basic technology for terahertz imaging, which allows detection and identification of drugs concealed in envelopes, by introducing the component spatial pattern analysis. The spatial distributions of the targets are obtained from terahertz multispectral transillumination images, using absorption spectra measured with a tunable terahertz-wave source. The samples we used were methamphetamine and MDMA, two of the most widely consumed illegal drugs in Japan, and aspirin as a reference.

© 2003 Optical Society of America

OCIS Codes
(110.2970) Imaging systems : Image detection systems
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(300.6270) Spectroscopy : Spectroscopy, far infrared

ToC Category:
Research Papers

Original Manuscript: August 15, 2003
Revised Manuscript: September 18, 2003
Published: October 6, 2003

Kodo Kawase, Yuichi Ogawa, Yuuki Watanabe, and Hiroyuki Inoue, "Non-destructive terahertz imaging of illicit drugs using spectral fingerprints," Opt. Express 11, 2549-2554 (2003)

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