Non-destructive inspection techniques for illicit drugs using terahertz imaging

Yuichi Ogawa, Kodo Kawase, Masahiro Yamashita, Hiroyuki Inoue

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


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 transilluminalion 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. The three kinds of samples hidden in mail envelopes were clearly distinguished. Hereby we expect this technology to contribute to the screening letters and packages.

Original languageEnglish
Pages (from-to)97-99
Number of pages3
JournalOSA Trends in Optics and Photonics Series
Volume96 A
Publication statusPublished - 2004
Externally publishedYes
EventConference on Lasers and Electro-Optics, CLEO - Washington, DC, United States
Duration: 2004 May 172004 May 19

ASJC Scopus subject areas

  • Engineering(all)


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