Abstract

We report the impact of the spatial coherence distortion on the measured absorption spectra and the identification of materials analyzed by terahertz time-domain spectroscopy. It is shown that the deformation of the terahertz beam wave front can result into the overestimation of the electromagnetic absorption, the generation of artificial absorption peaks and even to the disappearance of characteristic absorption peaks. Obtaining clear absorption spectra without artifacts is crucial for applications based on terahertz imaging and spectroscopy.

© 2009 Optical Society of America

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2009 (1)

2008 (2)

F. Théberge, M. Châteauneuf, and J. Dubois, "Effects of spatial coherence distortion on terahertz time-domain spectroscopy," Appl. Phys. Lett. 92, 183501 (2008).
[CrossRef]

C. Jördens and M. Koch, "Detection of foreign bodies in chocolate with pulsed terahertz spectroscopy," Opt. Eng. 47, 037003 (2008).
[CrossRef]

2007 (4)

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, "Terahertz imaging diagnostics of cancer tissues with a chemometrics technique," Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

M. Châteauneuf, J. Dubois, J.-F. Allard, D. Houde, and D. Morris, "Detection of explosives using THz time domain spectroscopy," Proc. SPIE 6796, 67962D (2007).
[CrossRef]

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

J. Chen, Y. Chen, H. Zhao, G.J. Bastiaans, and X.-C. Zhang, "Absorption coefficients of selected explosives and related compounds in the range of 0.1-2.8 THz," Opt. Express 15, 12060-12067 (2007).
[CrossRef] [PubMed]

2006 (5)

H. Zhong, A. Redo-Sanchez, and X.-C. Zhang, "Identification and classification of chemicals using terahertz reflective spectroscopic focal-plane imaging system," Opt. Express 14, 9130-9141 (2006).
[CrossRef] [PubMed]

Y. Dikmelik, J. B. Spicer, M. J. Fitch, and R. Osiander, "Effects of surface roughness on reflection spectra obtained by terahertz time-domain spectroscopy," Opt. Lett. 31, 3653-3655 (2006).
[CrossRef] [PubMed]

G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. F. Lampin, and D. Lippens, "Anomalous dispersion measurement in terahertz frequency region by photomixing," Appl. Phys. Lett. 88, 181105 (2006).
[CrossRef]

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, 103104 (2006).
[CrossRef]

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

2005 (2)

T. Ikeda, A. Matsushita, M. Tatsuno, Y. Minami, M. Yamaguchi, K. Yamamoto, M. Tani, and M. Hangyo, "Investigation of inflammable liquids by terahertz spectroscopy," Appl. Phys. Lett. 87, 034105 (2005).
[CrossRef]

M. Usami, M. Yamashita, K. Fukushima, C. Otani, and K. Kawase, "Terahertz wideband spectroscopic imaging based on two-dimensional electro-optic sampling technique," Appl. Phys. Lett. 86, 141109 (2005).
[CrossRef]

2004 (2)

J. E. Bjarnason, T. L. J. Chan, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Millimeter-wave, terahertz, and mid-infrared transmission through common clothing," Appl. Phys. Lett. 85, 519-521 (2004).
[CrossRef]

T. L. J. Chan, J. E. Bjarnason, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Attenuation contrast between biomolecular and inorganic materials at terahertz frequencies," Appl. Phys. Lett. 85, 2523-2525 (2004).
[CrossRef]

2003 (2)

Y. Watanabe, K. Kawase, T. Ikari, H. Ito, Y. Ishikawa, and H. Minamide, "Component spatial pattern analysis of chemicals using terahertz spectroscopic imaging," Appl. Phys. Lett. 83, 800-802 (2003).
[CrossRef]

K. Kawase, Y. Ogawa, Y. Watanabe, and H. Inoue, "Non-destructive terahertz imaging of illicit drugs using spectral fingerprints," Opt. Express 11, 2549-2554 (2003).
[CrossRef] [PubMed]

2001 (1)

Allard, J.-F.

M. Châteauneuf, J. Dubois, J.-F. Allard, D. Houde, and D. Morris, "Detection of explosives using THz time domain spectroscopy," Proc. SPIE 6796, 67962D (2007).
[CrossRef]

Bastiaans, G.J.

Bigourd, D.

G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. F. Lampin, and D. Lippens, "Anomalous dispersion measurement in terahertz frequency region by photomixing," Appl. Phys. Lett. 88, 181105 (2006).
[CrossRef]

Bjarnason, J. E.

J. E. Bjarnason, T. L. J. Chan, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Millimeter-wave, terahertz, and mid-infrared transmission through common clothing," Appl. Phys. Lett. 85, 519-521 (2004).
[CrossRef]

T. L. J. Chan, J. E. Bjarnason, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Attenuation contrast between biomolecular and inorganic materials at terahertz frequencies," Appl. Phys. Lett. 85, 2523-2525 (2004).
[CrossRef]

Bocquet, R.

G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. F. Lampin, and D. Lippens, "Anomalous dispersion measurement in terahertz frequency region by photomixing," Appl. Phys. Lett. 88, 181105 (2006).
[CrossRef]

Brown, E. R.

T. L. J. Chan, J. E. Bjarnason, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Attenuation contrast between biomolecular and inorganic materials at terahertz frequencies," Appl. Phys. Lett. 85, 2523-2525 (2004).
[CrossRef]

J. E. Bjarnason, T. L. J. Chan, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Millimeter-wave, terahertz, and mid-infrared transmission through common clothing," Appl. Phys. Lett. 85, 519-521 (2004).
[CrossRef]

Celis, M. A.

J. E. Bjarnason, T. L. J. Chan, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Millimeter-wave, terahertz, and mid-infrared transmission through common clothing," Appl. Phys. Lett. 85, 519-521 (2004).
[CrossRef]

T. L. J. Chan, J. E. Bjarnason, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Attenuation contrast between biomolecular and inorganic materials at terahertz frequencies," Appl. Phys. Lett. 85, 2523-2525 (2004).
[CrossRef]

Chan, T. L. J.

T. L. J. Chan, J. E. Bjarnason, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Attenuation contrast between biomolecular and inorganic materials at terahertz frequencies," Appl. Phys. Lett. 85, 2523-2525 (2004).
[CrossRef]

J. E. Bjarnason, T. L. J. Chan, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Millimeter-wave, terahertz, and mid-infrared transmission through common clothing," Appl. Phys. Lett. 85, 519-521 (2004).
[CrossRef]

Châteauneuf, M.

F. Théberge, M. Châteauneuf, and J. Dubois, "Effects of spatial coherence distortion on terahertz time-domain spectroscopy," Appl. Phys. Lett. 92, 183501 (2008).
[CrossRef]

M. Châteauneuf, J. Dubois, J.-F. Allard, D. Houde, and D. Morris, "Detection of explosives using THz time domain spectroscopy," Proc. SPIE 6796, 67962D (2007).
[CrossRef]

Chen, J.

Chen, Y.

Cuisset, A.

G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. F. Lampin, and D. Lippens, "Anomalous dispersion measurement in terahertz frequency region by photomixing," Appl. Phys. Lett. 88, 181105 (2006).
[CrossRef]

Danylov, A.

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

Dickinson, J. C.

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

Dikmelik, Y.

Dubois, J.

F. Théberge, M. Châteauneuf, and J. Dubois, "Effects of spatial coherence distortion on terahertz time-domain spectroscopy," Appl. Phys. Lett. 92, 183501 (2008).
[CrossRef]

M. Châteauneuf, J. Dubois, J.-F. Allard, D. Houde, and D. Morris, "Detection of explosives using THz time domain spectroscopy," Proc. SPIE 6796, 67962D (2007).
[CrossRef]

Fitch, M. J.

Fukushima, K.

M. Usami, M. Yamashita, K. Fukushima, C. Otani, and K. Kawase, "Terahertz wideband spectroscopic imaging based on two-dimensional electro-optic sampling technique," Appl. Phys. Lett. 86, 141109 (2005).
[CrossRef]

Gatesman, A. J.

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

Giles, R. H.

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

Goodhue, W.

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

Goyette, T. M.

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

Hangyo, M.

T. Ikeda, A. Matsushita, M. Tatsuno, Y. Minami, M. Yamaguchi, K. Yamamoto, M. Tani, and M. Hangyo, "Investigation of inflammable liquids by terahertz spectroscopy," Appl. Phys. Lett. 87, 034105 (2005).
[CrossRef]

Hayashi, A.

Hindle, F.

G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. F. Lampin, and D. Lippens, "Anomalous dispersion measurement in terahertz frequency region by photomixing," Appl. Phys. Lett. 88, 181105 (2006).
[CrossRef]

Hoen, W.

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

Hoshina, H.

H. Hoshina, Y. Sasaki, A. Hayashi, C. Otani, and K. Kawase, "Noninvasive mail inspection system with terahertz radiation," Appl. Spectrosc. 63, 81-86 (2009).
[CrossRef] [PubMed]

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, "Terahertz imaging diagnostics of cancer tissues with a chemometrics technique," Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

Houde, D.

M. Châteauneuf, J. Dubois, J.-F. Allard, D. Houde, and D. Morris, "Detection of explosives using THz time domain spectroscopy," Proc. SPIE 6796, 67962D (2007).
[CrossRef]

Ikari, T.

Y. Watanabe, K. Kawase, T. Ikari, H. Ito, Y. Ishikawa, and H. Minamide, "Component spatial pattern analysis of chemicals using terahertz spectroscopic imaging," Appl. Phys. Lett. 83, 800-802 (2003).
[CrossRef]

Ikeda, T.

T. Ikeda, A. Matsushita, M. Tatsuno, Y. Minami, M. Yamaguchi, K. Yamamoto, M. Tani, and M. Hangyo, "Investigation of inflammable liquids by terahertz spectroscopy," Appl. Phys. Lett. 87, 034105 (2005).
[CrossRef]

Inoue, H.

Ishikawa, Y.

Y. Watanabe, K. Kawase, T. Ikari, H. Ito, Y. Ishikawa, and H. Minamide, "Component spatial pattern analysis of chemicals using terahertz spectroscopic imaging," Appl. Phys. Lett. 83, 800-802 (2003).
[CrossRef]

Ito, H.

Y. Watanabe, K. Kawase, T. Ikari, H. Ito, Y. Ishikawa, and H. Minamide, "Component spatial pattern analysis of chemicals using terahertz spectroscopic imaging," Appl. Phys. Lett. 83, 800-802 (2003).
[CrossRef]

Jiang, X.

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

Jiao, Y.

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

Jördens, C.

C. Jördens and M. Koch, "Detection of foreign bodies in chocolate with pulsed terahertz spectroscopy," Opt. Eng. 47, 037003 (2008).
[CrossRef]

Kawase, K.

H. Hoshina, Y. Sasaki, A. Hayashi, C. Otani, and K. Kawase, "Noninvasive mail inspection system with terahertz radiation," Appl. Spectrosc. 63, 81-86 (2009).
[CrossRef] [PubMed]

M. Usami, M. Yamashita, K. Fukushima, C. Otani, and K. Kawase, "Terahertz wideband spectroscopic imaging based on two-dimensional electro-optic sampling technique," Appl. Phys. Lett. 86, 141109 (2005).
[CrossRef]

Y. Watanabe, K. Kawase, T. Ikari, H. Ito, Y. Ishikawa, and H. Minamide, "Component spatial pattern analysis of chemicals using terahertz spectroscopic imaging," Appl. Phys. Lett. 83, 800-802 (2003).
[CrossRef]

K. Kawase, Y. Ogawa, Y. Watanabe, and H. Inoue, "Non-destructive terahertz imaging of illicit drugs using spectral fingerprints," Opt. Express 11, 2549-2554 (2003).
[CrossRef] [PubMed]

Koch, M.

C. Jördens and M. Koch, "Detection of foreign bodies in chocolate with pulsed terahertz spectroscopy," Opt. Eng. 47, 037003 (2008).
[CrossRef]

Lampin, J. F.

G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. F. Lampin, and D. Lippens, "Anomalous dispersion measurement in terahertz frequency region by photomixing," Appl. Phys. Lett. 88, 181105 (2006).
[CrossRef]

Lee, A. W. M.

J. E. Bjarnason, T. L. J. Chan, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Millimeter-wave, terahertz, and mid-infrared transmission through common clothing," Appl. Phys. Lett. 85, 519-521 (2004).
[CrossRef]

T. L. J. Chan, J. E. Bjarnason, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Attenuation contrast between biomolecular and inorganic materials at terahertz frequencies," Appl. Phys. Lett. 85, 2523-2525 (2004).
[CrossRef]

Li, N.

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, 103104 (2006).
[CrossRef]

Liang, L.

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, 103104 (2006).
[CrossRef]

Lippens, D.

G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. F. Lampin, and D. Lippens, "Anomalous dispersion measurement in terahertz frequency region by photomixing," Appl. Phys. Lett. 88, 181105 (2006).
[CrossRef]

Lu, M.

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, 103104 (2006).
[CrossRef]

Matsushita, A.

T. Ikeda, A. Matsushita, M. Tatsuno, Y. Minami, M. Yamaguchi, K. Yamamoto, M. Tani, and M. Hangyo, "Investigation of inflammable liquids by terahertz spectroscopy," Appl. Phys. Lett. 87, 034105 (2005).
[CrossRef]

Matton, S.

G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. F. Lampin, and D. Lippens, "Anomalous dispersion measurement in terahertz frequency region by photomixing," Appl. Phys. Lett. 88, 181105 (2006).
[CrossRef]

Minami, Y.

T. Ikeda, A. Matsushita, M. Tatsuno, Y. Minami, M. Yamaguchi, K. Yamamoto, M. Tani, and M. Hangyo, "Investigation of inflammable liquids by terahertz spectroscopy," Appl. Phys. Lett. 87, 034105 (2005).
[CrossRef]

Minamide, H.

Y. Watanabe, K. Kawase, T. Ikari, H. Ito, Y. Ishikawa, and H. Minamide, "Component spatial pattern analysis of chemicals using terahertz spectroscopic imaging," Appl. Phys. Lett. 83, 800-802 (2003).
[CrossRef]

Mittleman, D. M.

Miyoshi, N.

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, "Terahertz imaging diagnostics of cancer tissues with a chemometrics technique," Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

Morris, D.

M. Châteauneuf, J. Dubois, J.-F. Allard, D. Houde, and D. Morris, "Detection of explosives using THz time domain spectroscopy," Proc. SPIE 6796, 67962D (2007).
[CrossRef]

Mouret, G.

G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. F. Lampin, and D. Lippens, "Anomalous dispersion measurement in terahertz frequency region by photomixing," Appl. Phys. Lett. 88, 181105 (2006).
[CrossRef]

Mu, K.

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

Nakajima, S.

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, "Terahertz imaging diagnostics of cancer tissues with a chemometrics technique," Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

Nixon, W. E.

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

Ogawa, Y.

Osiander, R.

Otani, C.

H. Hoshina, Y. Sasaki, A. Hayashi, C. Otani, and K. Kawase, "Noninvasive mail inspection system with terahertz radiation," Appl. Spectrosc. 63, 81-86 (2009).
[CrossRef] [PubMed]

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, "Terahertz imaging diagnostics of cancer tissues with a chemometrics technique," Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

M. Usami, M. Yamashita, K. Fukushima, C. Otani, and K. Kawase, "Terahertz wideband spectroscopic imaging based on two-dimensional electro-optic sampling technique," Appl. Phys. Lett. 86, 141109 (2005).
[CrossRef]

Pearce, J.

Redo-Sanchez, A.

Sasaki, Y.

Shen, J.

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

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, 103104 (2006).
[CrossRef]

Spicer, J. B.

Tani, M.

T. Ikeda, A. Matsushita, M. Tatsuno, Y. Minami, M. Yamaguchi, K. Yamamoto, M. Tani, and M. Hangyo, "Investigation of inflammable liquids by terahertz spectroscopy," Appl. Phys. Lett. 87, 034105 (2005).
[CrossRef]

Tatsuno, M.

T. Ikeda, A. Matsushita, M. Tatsuno, Y. Minami, M. Yamaguchi, K. Yamamoto, M. Tani, and M. Hangyo, "Investigation of inflammable liquids by terahertz spectroscopy," Appl. Phys. Lett. 87, 034105 (2005).
[CrossRef]

Théberge, F.

F. Théberge, M. Châteauneuf, and J. Dubois, "Effects of spatial coherence distortion on terahertz time-domain spectroscopy," Appl. Phys. Lett. 92, 183501 (2008).
[CrossRef]

Usami, M.

M. Usami, M. Yamashita, K. Fukushima, C. Otani, and K. Kawase, "Terahertz wideband spectroscopic imaging based on two-dimensional electro-optic sampling technique," Appl. Phys. Lett. 86, 141109 (2005).
[CrossRef]

Waldman, J.

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

Watanabe, Y.

K. Kawase, Y. Ogawa, Y. Watanabe, and H. Inoue, "Non-destructive terahertz imaging of illicit drugs using spectral fingerprints," Opt. Express 11, 2549-2554 (2003).
[CrossRef] [PubMed]

Y. Watanabe, K. Kawase, T. Ikari, H. Ito, Y. Ishikawa, and H. Minamide, "Component spatial pattern analysis of chemicals using terahertz spectroscopic imaging," Appl. Phys. Lett. 83, 800-802 (2003).
[CrossRef]

Xu, X.

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, 103104 (2006).
[CrossRef]

Yamaguchi, M.

T. Ikeda, A. Matsushita, M. Tatsuno, Y. Minami, M. Yamaguchi, K. Yamamoto, M. Tani, and M. Hangyo, "Investigation of inflammable liquids by terahertz spectroscopy," Appl. Phys. Lett. 87, 034105 (2005).
[CrossRef]

Yamamoto, K.

T. Ikeda, A. Matsushita, M. Tatsuno, Y. Minami, M. Yamaguchi, K. Yamamoto, M. Tani, and M. Hangyo, "Investigation of inflammable liquids by terahertz spectroscopy," Appl. Phys. Lett. 87, 034105 (2005).
[CrossRef]

Yamashita, M.

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, "Terahertz imaging diagnostics of cancer tissues with a chemometrics technique," Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

M. Usami, M. Yamashita, K. Fukushima, C. Otani, and K. Kawase, "Terahertz wideband spectroscopic imaging based on two-dimensional electro-optic sampling technique," Appl. Phys. Lett. 86, 141109 (2005).
[CrossRef]

Zhang, C.

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

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, 103104 (2006).
[CrossRef]

Zhang, L.

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

Zhang, X.-C.

Zhang, Y.

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

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, 103104 (2006).
[CrossRef]

Zhao, G.

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

Zhao, H.

Zhong, H.

Zhou, Q.

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

Appl. Phys. Lett. (8)

T. Ikeda, A. Matsushita, M. Tatsuno, Y. Minami, M. Yamaguchi, K. Yamamoto, M. Tani, and M. Hangyo, "Investigation of inflammable liquids by terahertz spectroscopy," Appl. Phys. Lett. 87, 034105 (2005).
[CrossRef]

Y. Watanabe, K. Kawase, T. Ikari, H. Ito, Y. Ishikawa, and H. Minamide, "Component spatial pattern analysis of chemicals using terahertz spectroscopic imaging," Appl. Phys. Lett. 83, 800-802 (2003).
[CrossRef]

M. Usami, M. Yamashita, K. Fukushima, C. Otani, and K. Kawase, "Terahertz wideband spectroscopic imaging based on two-dimensional electro-optic sampling technique," Appl. Phys. Lett. 86, 141109 (2005).
[CrossRef]

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, "Terahertz imaging diagnostics of cancer tissues with a chemometrics technique," Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

T. L. J. Chan, J. E. Bjarnason, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Attenuation contrast between biomolecular and inorganic materials at terahertz frequencies," Appl. Phys. Lett. 85, 2523-2525 (2004).
[CrossRef]

J. E. Bjarnason, T. L. J. Chan, A. W. M. Lee, M. A. Celis, and E. R. Brown, "Millimeter-wave, terahertz, and mid-infrared transmission through common clothing," Appl. Phys. Lett. 85, 519-521 (2004).
[CrossRef]

F. Théberge, M. Châteauneuf, and J. Dubois, "Effects of spatial coherence distortion on terahertz time-domain spectroscopy," Appl. Phys. Lett. 92, 183501 (2008).
[CrossRef]

G. Mouret, S. Matton, R. Bocquet, D. Bigourd, F. Hindle, A. Cuisset, J. F. Lampin, and D. Lippens, "Anomalous dispersion measurement in terahertz frequency region by photomixing," Appl. Phys. Lett. 88, 181105 (2006).
[CrossRef]

Appl. Spectrosc. (1)

J. Appl. Phys. (1)

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, 103104 (2006).
[CrossRef]

Opt. Eng. (1)

C. Jördens and M. Koch, "Detection of foreign bodies in chocolate with pulsed terahertz spectroscopy," Opt. Eng. 47, 037003 (2008).
[CrossRef]

Opt. Express (3)

Opt. Lett. (2)

Proc. SPIE (3)

M. Châteauneuf, J. Dubois, J.-F. Allard, D. Houde, and D. Morris, "Detection of explosives using THz time domain spectroscopy," Proc. SPIE 6796, 67962D (2007).
[CrossRef]

C. Zhang, K. Mu, X. Jiang, Y. Jiao, L. Zhang, Q. Zhou, Y. Zhang, J. Shen, G. Zhao, and X.-C. Zhang, "Identification of explosives and drugs and inspection of material defects with THz radiation," Proc. SPIE 6840, 68400S (2007).
[CrossRef]

A. J. Gatesman, A. Danylov, T. M. Goyette, J. C. Dickinson, R. H. Giles, W. Goodhue, J. Waldman, W. E. Nixon, and W. Hoen, "Terahertz behavior of optical components and common materials," Proc. SPIE 6212, 62120E (2006).
[CrossRef]

Other (3)

D. J. Cook, B. K. Decker, G. Maislin, and M. G. Allen, "Through container sensing of concealed substances using THz Spectroscopy," presented at the SPIE Photonics East Conference, Rhode Island, USA, 28th October, 2003.

L.M. Zurk, B. Orlowski, G. Sundberg, Z. Zhou, and A. Chen, "Terahertz scattering from a rough granular surface," in Proceedings of IEEE International Symposium on Antennas and Propagation (IEEE, 2007), pp.4929-4932.
[CrossRef]

M. C. Kemp, C. Baker, and I. Gregory, "Stand-off explosives detection using terahertz technology," in Stand-off Detection of Suicide Bombers and Mobile Subjects, H. Schubert, and A. Rimski-Korsakov, eds. (Springer, 2006), pp.151-165.
[CrossRef]

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Figures (5)

Fig. 1.
Fig. 1.

(a) Experimental results of the spectral attenuation for an uniform Teflon foil of 800 µm thick (dotted line), for a Teflon felt having a measured OPL standard deviation of ~35 µm (dashed line), and for a Teflon felt having a measured OPL standard deviation of ~140 µm (solid line). (b) Numerical simulations for the spectral attenuation of a THz pulse passing through a Teflon felt with an OPL standard deviation of 42 µm (dash line), and 144 µm (solid line).

Fig. 2.
Fig. 2.

(a) Experimental results of the spectral attenuation for a polyester sample of 500 and 1000 deniers. (b) Numerical simulations for the spectral attenuation of a THz pulse passing through a polyester fabric of 500 and 1000 deniers. (c) Sketch of the fabric structure.

Fig. 3.
Fig. 3.

(a) Experimental results of the spectral attenuation for a polyester fabric of 500 deniers and a ground polyester sample. Optical images of (b) the 500 deniers polyester fabric and (c) the ground polyester sample.

Fig. 4.
Fig. 4.

Experimental results of the spectral attenuation for α-lactose monohydrate samples having powder diameter lower than 5 µm (black line), and flake size between 355 µm to 1mm (red line).

Fig. 5.
Fig. 5.

Experimental results of the spectral attenuation for RDX samples having powder diameter lower than 5 µm (black line), and between 200 µm to 300 µm (red line).

Equations (2)

Equations on this page are rendered with MathJax. Learn more.

Er(ω)=12π+exp(iωt)[E1(x,y,z,t)exp(α(ω)d(x,y))
×exp (iωcOPL(ω,x,y)) dxdy ]dt

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