Abstract
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 language | English |
|---|---|
| Pages (from-to) | 97-99 |
| Number of pages | 3 |
| Journal | OSA Trends in Optics and Photonics Series |
| Volume | 96 A |
| Publication status | Published - 2004 |
| Externally published | Yes |
| Event | Conference on Lasers and Electro-Optics, CLEO - Washington, DC, United States Duration: 2004 May 17 → 2004 May 19 |
ASJC Scopus subject areas
- Engineering(all)