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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 21 — Oct. 11, 2010
  • pp: 21798–21803

Fingerprint extraction from interference destruction terahertz spectrum

Wei Xiong and Jingling Shen  »View Author Affiliations

Optics Express, Vol. 18, Issue 21, pp. 21798-21803 (2010)

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In this paper, periodic peaks in a terahertz absorption spectrum are confirmed to be induced from interference effects. Theoretically, we explained the periodic peaks and calculated the locations of them. Accordingly, a technique was suggested, with which the interference peaks in a terahertz spectrum can be eliminated and therefore a real terahertz absorption spectrum can be obtained. Experimentally, a sample, Methamphetamine, was investigated and its terahertz fingerprint was successfully extracted from its interference destruction spectrum. This technique is useful in getting samples’ terahertz fingerprint spectra, and furthermore provides a fast nondestructive testing method using a large size terahertz beam to identify materials.

© 2010 OSA

OCIS Codes
(300.1030) Spectroscopy : Absorption
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:

Original Manuscript: July 16, 2010
Revised Manuscript: September 9, 2010
Manuscript Accepted: September 9, 2010
Published: September 29, 2010

Virtual Issues
Vol. 5, Iss. 14 Virtual Journal for Biomedical Optics

Wei Xiong and Jingling Shen, "Fingerprint extraction from interference destruction terahertz spectrum," Opt. Express 18, 21798-21803 (2010)

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