Fingerprint extraction from interference destruction terahertz spectrum

doi:10.1364/OE.18.021798

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.

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

B. Fischer, M. Hoffmann, H. Helm, G. Modjesch, and P. Jepsen, “Chemical recognition in terahertz time-domain spectroscopy and imaging,” Semicond. Sci. Technol. 20(7), S246–S253 (2005). [CrossRef]
H. Liu and X. Zhang, "Terahertz Spectroscopy for Explosive, Pharmaceutical, and Biological Sensing Applications," Terahertz Frequency Detection and Identification of Materials and Objects, 251-323.
L. Duvillaret, F. Garet, and J. L. Coutaz, “Highly precise determination of optical constants and sample thickness in terahertz time-domain spectroscopy,” Appl. Opt. 38(2), 409–415 (1999). [CrossRef]
Y. C. Shen, P. F. Taday, and M. Pepper, “Elimination of scattering effects in spectral measurement of granulated materials using terahertz pulsed spectroscopy,” Appl. Phys. Lett. 92(5), 051103 (2008). [CrossRef]
F. Theberge, M. Chateauneuf, and J. Dubois, “Effects of spatial coherence distortion on terahertz time-domain spectroscopy,” Appl. Phys. Lett. . 92(18), 183501 (2008). [CrossRef]
F. Théberge, M. Châteauneuf, J. Dubois, S. Désilets, and L.-S. Lussier, “Spectral artifacts from non-uniform samples analyzed by terahertz time-domain spectroscopy,” Opt. Express 17(13), 10841–10848 (2009). [CrossRef] [PubMed]
M. Lu, J. Shen, N. Li, Y. Zhang, C. Zhang, L. Liang, and X. Xu, “Detection and identification of illicit drugs using terahertz imaging,” J. Appl. Phys. 100(10), 103104 (2006). [CrossRef]
G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. Lampin, and D. Lippens, “Anomalous dispersion measurement in terahertz frequency region by photomixing,” Appl. Phys. Lett. 88(18), 181105 (2006). [CrossRef]
J. Sun, J. Shen, L. Liang, X. Xu, H. Liu, and C. Zhang, “Experimental investigation on terahertz spectra of amphetamine type stimulants,” Chin. Phys. Lett. 22(12), 3176–3178 (2005). [CrossRef]
N. Li, J. Shen, M. Lu, Y. Jia, J. Sun, L. Liang, Y. Shi, X. Xu, and C. Zhang, "Non-destructive inspections of illicit drugs in envelope using terahertz time-domain spectroscopy," in 2006), 60472Y.

Appl. Opt.

L. Duvillaret, F. Garet, and J. L. Coutaz, “Highly precise determination of optical constants and sample thickness in terahertz time-domain spectroscopy,” Appl. Opt. 38(2), 409–415 (1999). [CrossRef]

Appl. Phys. Lett.

Y. C. Shen, P. F. Taday, and M. Pepper, “Elimination of scattering effects in spectral measurement of granulated materials using terahertz pulsed spectroscopy,” Appl. Phys. Lett. 92(5), 051103 (2008). [CrossRef]
F. Theberge, M. Chateauneuf, and J. Dubois, “Effects of spatial coherence distortion on terahertz time-domain spectroscopy,” Appl. Phys. Lett. . 92(18), 183501 (2008). [CrossRef]
G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. Lampin, and D. Lippens, “Anomalous dispersion measurement in terahertz frequency region by photomixing,” Appl. Phys. Lett. 88(18), 181105 (2006). [CrossRef]

Chin. Phys. Lett.

J. Sun, J. Shen, L. Liang, X. Xu, H. Liu, and C. Zhang, “Experimental investigation on terahertz spectra of amphetamine type stimulants,” Chin. Phys. Lett. 22(12), 3176–3178 (2005). [CrossRef]

J. Appl. Phys.

M. Lu, J. Shen, N. Li, Y. Zhang, C. Zhang, L. Liang, and X. Xu, “Detection and identification of illicit drugs using terahertz imaging,” J. Appl. Phys. 100(10), 103104 (2006). [CrossRef]

Opt. Express

F. Théberge, M. Châteauneuf, J. Dubois, S. Désilets, and L.-S. Lussier, “Spectral artifacts from non-uniform samples analyzed by terahertz time-domain spectroscopy,” Opt. Express 17(13), 10841–10848 (2009). [CrossRef] [PubMed]

Semicond. Sci. Technol.

B. Fischer, M. Hoffmann, H. Helm, G. Modjesch, and P. Jepsen, “Chemical recognition in terahertz time-domain spectroscopy and imaging,” Semicond. Sci. Technol. 20(7), S246–S253 (2005). [CrossRef]

Other

H. Liu and X. Zhang, "Terahertz Spectroscopy for Explosive, Pharmaceutical, and Biological Sensing Applications," Terahertz Frequency Detection and Identification of Materials and Objects, 251-323.
N. Li, J. Shen, M. Lu, Y. Jia, J. Sun, L. Liang, Y. Shi, X. Xu, and C. Zhang, "Non-destructive inspections of illicit drugs in envelope using terahertz time-domain spectroscopy," in 2006), 60472Y.

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