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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)
http://dx.doi.org/10.1364/OE.18.021798


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Abstract

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:
Spectroscopy

History
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

Citation
Wei Xiong and Jingling Shen, "Fingerprint extraction from interference destruction terahertz spectrum," Opt. Express 18, 21798-21803 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-21-21798


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References

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