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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 18 — Sep. 5, 2005
  • pp: 6750–6755

Study on the THz spectrum of methamphetamine

Li Ning, Jingling Shen, Sun Jinhai, Liang Laishun, Xiaoyu Xu, Meihong Lu, and Jia Yan  »View Author Affiliations

Optics Express, Vol. 13, Issue 18, pp. 6750-6755 (2005)

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The spectral absorption features of methamphetamine (MA), one of the most widely consumed illicit drugs in the world, are studied experimentally by Terahertz (THz) time-domain spectroscopy (THz-TDS), and the characteristic absorption spectra are obtained in the range of 0.2 to 2.6 THz. The vibrational frequencies are calculated using the density functional theory (DFT). Theoretical results show significant agreement with experimental results, and identification of vibrational modes are given. The calculated results further confirm that the characteristic frequencies come from the collective vibrational modes. The results suggest that use of the THz-TDS technique can be an effective way to inspect for illicit drugs.

© 2005 Optical Society of America

OCIS Codes
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis
(300.6270) Spectroscopy : Spectroscopy, far infrared

ToC Category:
Research Papers

Original Manuscript: May 23, 2005
Revised Manuscript: August 14, 2005
Published: September 5, 2005

Li Ning, Jingling Shen, Sun Jinhai, Liang Laishun, Xiaoyu Xu, Meihong Lu, and Jia Yan, "Study on the THz spectrum of methamphetamine," Opt. Express 13, 6750-6755 (2005)

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