Abstract

We realize a compact two-dimensional tomographic terahertz imaging experiment involving only one photoconductive antenna (PCA) simultaneously serving as a transmitter and receiver of the terahertz radiation. A hollow-core Teflon cylinder filled with α-Lactose monohydrate powder is studied at two terahertz frequencies, far away and at a specific absorption line of the powder. This sample is placed between the antenna and a chopper wheel, which serves as back reflector of the terahertz radiation into the PCA. Amplitude and phase information of the continuous-wave (CW) terahertz radiation are extracted from the measured homodyne self-mixing (HSM) signal after interaction with the cylinder. The influence of refraction is studied by modeling the set-up utilizing ZEMAX and is discussed by means of the measured 1D projections. The tomographic reconstruction by using the Simultaneous Algebraic Reconstruction Technique (SART) allows to identify both object geometry and α-Lactose filling.

© 2015 Optical Society of America

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References

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    [Crossref]
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    [Crossref]
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    [Crossref] [PubMed]
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    [Crossref] [PubMed]
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2015 (1)

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
[Crossref]

2014 (6)

J. P. Guillet, B. Recur, L. Frederique, B. Bousquet, L. Canioni, I. Manek-Hönninger, P. Desbarats, and P. Mounaix, “Review of terahertz tomography techniques,” J. Infrared Millim. Te. 35(4), 382–411 (2014)
[Crossref]

A. Brahm, A. Wilms, M. Tymoshchuk, C. Grossmann, G. Notni, and A. Tnnermann, “Optical effects at projection measurements for terahertz tomography,” Opt. Laser Technol. 62, 49–57 (2014).
[Crossref]

M. Langenbach, A. Roggenbuck, I. C. Mayorga, A. Deninger, K. Thirunavukkuarasu, J. Hemberger, and M. Grüninger, “Group delay in THz spectroscopy with ultra-wideband log-spiral antennae,” J. Infrared Millim. Te. 35, 918–931 (2014).
[Crossref]

A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
[Crossref]

A. Brahm, A. Wilms, R. J. B. Dietz, T. Göbel, M. Schell, G. Notni, and A. Tünnermann, “Multichannel terahertz time-domain spectroscopy system at 1030 nm excitation wavelength,” Opt. Express 22(11), 12982–12993(2014).
[Crossref] [PubMed]

S. Busch, T. Probst, M. Schwerdtfeger, R. Dietz, J. Palaci, and M. Koch, “Terahertz transceiver concept,” Opt. Express 22(14) 16841–16846 (2014).
[Crossref] [PubMed]

2013 (2)

S. Mukherjee, J. Federici, P. Lopes, and M. Cabral, “Elimination of Fresnel reflection boundary effects and beam steering in pulsed terahertz computed tomography,” J. Infrared Millim. Te. 34, 539–555 (2013).
[Crossref]

A. J. Seeds, M. J. Fice, Ka. Balakier, M. Natrella, O. Mitrofanov, M. Lamponi, M. Chtioui, F. van Dijk, M. Pepper, G. Aeppli, A. G. Davies, P. Dean, E. Linfield, and C. C. Renaud, “Coherent terahertz photonics,” Opt. Express 21(19), 22988–23000 (2013).
[Crossref] [PubMed]

2012 (2)

B. Recur, J. P. Guillet, I. Manek-Hönninger, J. C. Delagnes, W. Benharbone, P. Desbarats, J. P. Domenger, L. Canioni, and P. Mounaix, “Propagation beam consideration for 3D THz computed tomography,” Opt. Express 20, 5817–5829 (2012).
[Crossref] [PubMed]

B. Ewers, N. S. Köster, R. Woscholski, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, and S. W. Koch, “Ionization of coherent excitons by strong terahertz fields,” Phys. Rev. B 85(7), 075307 (2012).
[Crossref]

2011 (7)

H. J. Song and T. Nagatsuma, “Present and future of terahertz communications,” IEEE Trans. Terahertz Sci. Technol. 1(1), 256–263 (2011).
[Crossref]

P. U. Jepsen, D. G. Cooke, and M. Koch, “Terahertz spectroscopy and imaging - modern techniques and applications,” Laser Photonics Rev. 5(1), 124–166 (2011).
[Crossref]

B. Recur, A. Younus, S. Salort, P. Mounaix, B. Chassagne, P. Desbarats, J-P. Caumes, and E. Abraham, “Investigation on reconstruction methods applied to 3D terahertz computed tomography,” Opt. Express 19, 5105–5117 (2011).
[Crossref] [PubMed]

F. Schuster, D. Coquillat, H. Videlier, M. Sakowicz, F. Teppe, L. Dussopt, B. Giffard, T. Skotnicki, and W. Knap, “Broadband terahertz imaging with highly sensitive silicon CMOS detectors,” Opt. Express 19(8), 7827–7832 (2011).
[Crossref] [PubMed]

P. Dean, Y. L. Lim, A. Valavanis, R. Kliese, M. Nikolic, S. P. Khanna, M. Lachab, D. Indjin, Z. Ikonic, P. Harrison, A. D. Rakic, E. H. Linfield, and A. Giles Davies, “Terahertz imaging through self-mixing in a quantum cascade laser,” Opt. Lett. 36(13), 2587–2589 (2011).
[Crossref] [PubMed]

S. Preu, G. Döhler, S. Malzer, L. Wang, and A. Gossard, “Tunable, continuous-wave Terahertz photomixer sources and applications,” Appl. Phys. 109(6), 061301 (2011).
[Crossref]

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
[Crossref]

2010 (1)

A. Roggenbuck, H. Schmitz, A. Deninger, I. C. Mayorga, J. Hemberger, R. Güsten, and M. Grüninger, “Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples,” New J. Phys. 12, 043017 (2010).
[Crossref]

2007 (3)

B. S.-Y. Ung, B. M. Fischer, B. W.-H. Ng, and D. Abbott, “Towards quality control of food using terahertz,” Proc. SPIE 6799, 67991E (2007).
[Crossref]

L. Hai-Bo, H. Zhong, N. Karpowicz, Y. Chen, and Z. Xi-Cheng, “Terahertz spectroscopy and imaging for defense and security applications,” Proc. IEEE 95(8), 1514–1527 (2007).
[Crossref]

M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
[Crossref]

2005 (1)

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications - explosives, weapons and drugs,” Semicond. Sci. Technol. 20, 266–280 (2005).
[Crossref]

2002 (1)

K. J. Siebert, H. Quast, R. Leonhardt, T. Löffler, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch, “Continuous-wave all-optoelectronic terahertz imaging,” Appl. Phys. Letters 80(16), 3003–3005 (2002).
[Crossref]

1984 (1)

A. H. Andersen and A. C. Kak, “Simultaneous algebraic reconstruction technique (SART): a superior implementation of the ART algorithm,” Ultrasonic Imaging 6, 81–94 (1984).
[Crossref] [PubMed]

Abbott, D.

B. S.-Y. Ung, B. M. Fischer, B. W.-H. Ng, and D. Abbott, “Towards quality control of food using terahertz,” Proc. SPIE 6799, 67991E (2007).
[Crossref]

Abraham, E.

Aeppli, G.

Al Hadi, R.

H. Sherry, J. Grzyb, Y. Zhao, R. Al Hadi, A. Cathelin, A. Kaiser, and U. Pfeiffer, “A 1k Pixel CMOS Camera Chip for 25 fps Real-Time,” in Proceedings of IEEE Conference on Solid-State Circuits (IEEE, 2012), pp. 252–254.

Andersen, A. H.

A. H. Andersen and A. C. Kak, “Simultaneous algebraic reconstruction technique (SART): a superior implementation of the ART algorithm,” Ultrasonic Imaging 6, 81–94 (1984).
[Crossref] [PubMed]

Balakier, Ka.

Barat, R.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications - explosives, weapons and drugs,” Semicond. Sci. Technol. 20, 266–280 (2005).
[Crossref]

Batenburg, K. J.

W. J. Palenstijn, K. J. Batenburg, and J. Sijbers, “The ASTRA tomography toolbox,” in Proceedings of 13th International Conference on Computational and Mathematical Methods in Science and Engineering (CMMSE, 2013), pp. 1–7.

Bauer, M.

A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
[Crossref]

Bauer, T.

K. J. Siebert, H. Quast, R. Leonhardt, T. Löffler, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch, “Continuous-wave all-optoelectronic terahertz imaging,” Appl. Phys. Letters 80(16), 3003–3005 (2002).
[Crossref]

Benharbone, W.

Birkl, G.

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
[Crossref]

Blömer, D.

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
[Crossref]

Boppel, S.

A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
[Crossref]

Bousquet, B.

J. P. Guillet, B. Recur, L. Frederique, B. Bousquet, L. Canioni, I. Manek-Hönninger, P. Desbarats, and P. Mounaix, “Review of terahertz tomography techniques,” J. Infrared Millim. Te. 35(4), 382–411 (2014)
[Crossref]

Brahm, A.

A. Brahm, A. Wilms, M. Tymoshchuk, C. Grossmann, G. Notni, and A. Tnnermann, “Optical effects at projection measurements for terahertz tomography,” Opt. Laser Technol. 62, 49–57 (2014).
[Crossref]

A. Brahm, A. Wilms, R. J. B. Dietz, T. Göbel, M. Schell, G. Notni, and A. Tünnermann, “Multichannel terahertz time-domain spectroscopy system at 1030 nm excitation wavelength,” Opt. Express 22(11), 12982–12993(2014).
[Crossref] [PubMed]

Breuer, S.

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
[Crossref]

Busch, S.

Cabral, M.

S. Mukherjee, J. Federici, P. Lopes, and M. Cabral, “Elimination of Fresnel reflection boundary effects and beam steering in pulsed terahertz computed tomography,” J. Infrared Millim. Te. 34, 539–555 (2013).
[Crossref]

Canioni, L.

J. P. Guillet, B. Recur, L. Frederique, B. Bousquet, L. Canioni, I. Manek-Hönninger, P. Desbarats, and P. Mounaix, “Review of terahertz tomography techniques,” J. Infrared Millim. Te. 35(4), 382–411 (2014)
[Crossref]

B. Recur, J. P. Guillet, I. Manek-Hönninger, J. C. Delagnes, W. Benharbone, P. Desbarats, J. P. Domenger, L. Canioni, and P. Mounaix, “Propagation beam consideration for 3D THz computed tomography,” Opt. Express 20, 5817–5829 (2012).
[Crossref] [PubMed]

Cathelin, A.

H. Sherry, J. Grzyb, Y. Zhao, R. Al Hadi, A. Cathelin, A. Kaiser, and U. Pfeiffer, “A 1k Pixel CMOS Camera Chip for 25 fps Real-Time,” in Proceedings of IEEE Conference on Solid-State Circuits (IEEE, 2012), pp. 252–254.

Caumes, J-P.

Chassagne, B.

Chatterjee, S.

B. Ewers, N. S. Köster, R. Woscholski, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, and S. W. Koch, “Ionization of coherent excitons by strong terahertz fields,” Phys. Rev. B 85(7), 075307 (2012).
[Crossref]

Chen, Y.

L. Hai-Bo, H. Zhong, N. Karpowicz, Y. Chen, and Z. Xi-Cheng, “Terahertz spectroscopy and imaging for defense and security applications,” Proc. IEEE 95(8), 1514–1527 (2007).
[Crossref]

Chtioui, M.

Cooke, D. G.

P. U. Jepsen, D. G. Cooke, and M. Koch, “Terahertz spectroscopy and imaging - modern techniques and applications,” Laser Photonics Rev. 5(1), 124–166 (2011).
[Crossref]

Coquillat, D.

Cunningham, P. D.

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
[Crossref]

Czasch, S.

K. J. Siebert, H. Quast, R. Leonhardt, T. Löffler, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch, “Continuous-wave all-optoelectronic terahertz imaging,” Appl. Phys. Letters 80(16), 3003–3005 (2002).
[Crossref]

Davies, A. G.

Dean, P.

Delagnes, J. C.

Deninger, A.

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
[Crossref]

M. Langenbach, A. Roggenbuck, I. C. Mayorga, A. Deninger, K. Thirunavukkuarasu, J. Hemberger, and M. Grüninger, “Group delay in THz spectroscopy with ultra-wideband log-spiral antennae,” J. Infrared Millim. Te. 35, 918–931 (2014).
[Crossref]

A. Roggenbuck, H. Schmitz, A. Deninger, I. C. Mayorga, J. Hemberger, R. Güsten, and M. Grüninger, “Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples,” New J. Phys. 12, 043017 (2010).
[Crossref]

Desbarats, P.

Dietz, R.

Dietz, R. J. B.

Döhler, G.

S. Preu, G. Döhler, S. Malzer, L. Wang, and A. Gossard, “Tunable, continuous-wave Terahertz photomixer sources and applications,” Appl. Phys. 109(6), 061301 (2011).
[Crossref]

Domenger, J. P.

Dussopt, L.

Elsäßer, W.

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
[Crossref]

Ertmer, W.

M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
[Crossref]

Ewers, B.

B. Ewers, N. S. Köster, R. Woscholski, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, and S. W. Koch, “Ionization of coherent excitons by strong terahertz fields,” Phys. Rev. B 85(7), 075307 (2012).
[Crossref]

Federici, J.

S. Mukherjee, J. Federici, P. Lopes, and M. Cabral, “Elimination of Fresnel reflection boundary effects and beam steering in pulsed terahertz computed tomography,” J. Infrared Millim. Te. 34, 539–555 (2013).
[Crossref]

Federici, J. F.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications - explosives, weapons and drugs,” Semicond. Sci. Technol. 20, 266–280 (2005).
[Crossref]

Fice, M. J.

Fischer, B. M.

B. S.-Y. Ung, B. M. Fischer, B. W.-H. Ng, and D. Abbott, “Towards quality control of food using terahertz,” Proc. SPIE 6799, 67991E (2007).
[Crossref]

Frederique, L.

J. P. Guillet, B. Recur, L. Frederique, B. Bousquet, L. Canioni, I. Manek-Hönninger, P. Desbarats, and P. Mounaix, “Review of terahertz tomography techniques,” J. Infrared Millim. Te. 35(4), 382–411 (2014)
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Gary, D.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications - explosives, weapons and drugs,” Semicond. Sci. Technol. 20, 266–280 (2005).
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Gibbs, H. M.

B. Ewers, N. S. Köster, R. Woscholski, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, and S. W. Koch, “Ionization of coherent excitons by strong terahertz fields,” Phys. Rev. B 85(7), 075307 (2012).
[Crossref]

Giffard, B.

Giles Davies, A.

Gilowski, M.

M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
[Crossref]

Giuliani, G.

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
[Crossref]

Göbel, T.

Gossard, A.

S. Preu, G. Döhler, S. Malzer, L. Wang, and A. Gossard, “Tunable, continuous-wave Terahertz photomixer sources and applications,” Appl. Phys. 109(6), 061301 (2011).
[Crossref]

Grossmann, C.

A. Brahm, A. Wilms, M. Tymoshchuk, C. Grossmann, G. Notni, and A. Tnnermann, “Optical effects at projection measurements for terahertz tomography,” Opt. Laser Technol. 62, 49–57 (2014).
[Crossref]

Grüninger, M.

M. Langenbach, A. Roggenbuck, I. C. Mayorga, A. Deninger, K. Thirunavukkuarasu, J. Hemberger, and M. Grüninger, “Group delay in THz spectroscopy with ultra-wideband log-spiral antennae,” J. Infrared Millim. Te. 35, 918–931 (2014).
[Crossref]

A. Roggenbuck, H. Schmitz, A. Deninger, I. C. Mayorga, J. Hemberger, R. Güsten, and M. Grüninger, “Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples,” New J. Phys. 12, 043017 (2010).
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H. Sherry, J. Grzyb, Y. Zhao, R. Al Hadi, A. Cathelin, A. Kaiser, and U. Pfeiffer, “A 1k Pixel CMOS Camera Chip for 25 fps Real-Time,” in Proceedings of IEEE Conference on Solid-State Circuits (IEEE, 2012), pp. 252–254.

Guillet, J. P.

J. P. Guillet, B. Recur, L. Frederique, B. Bousquet, L. Canioni, I. Manek-Hönninger, P. Desbarats, and P. Mounaix, “Review of terahertz tomography techniques,” J. Infrared Millim. Te. 35(4), 382–411 (2014)
[Crossref]

B. Recur, J. P. Guillet, I. Manek-Hönninger, J. C. Delagnes, W. Benharbone, P. Desbarats, J. P. Domenger, L. Canioni, and P. Mounaix, “Propagation beam consideration for 3D THz computed tomography,” Opt. Express 20, 5817–5829 (2012).
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A. Roggenbuck, H. Schmitz, A. Deninger, I. C. Mayorga, J. Hemberger, R. Güsten, and M. Grüninger, “Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples,” New J. Phys. 12, 043017 (2010).
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Hai-Bo, L.

L. Hai-Bo, H. Zhong, N. Karpowicz, Y. Chen, and Z. Xi-Cheng, “Terahertz spectroscopy and imaging for defense and security applications,” Proc. IEEE 95(8), 1514–1527 (2007).
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Hayden, L. M.

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
[Crossref]

Hemberger, J.

M. Langenbach, A. Roggenbuck, I. C. Mayorga, A. Deninger, K. Thirunavukkuarasu, J. Hemberger, and M. Grüninger, “Group delay in THz spectroscopy with ultra-wideband log-spiral antennae,” J. Infrared Millim. Te. 35, 918–931 (2014).
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A. Roggenbuck, H. Schmitz, A. Deninger, I. C. Mayorga, J. Hemberger, R. Güsten, and M. Grüninger, “Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples,” New J. Phys. 12, 043017 (2010).
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Herr, W.

M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
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Huang, F.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications - explosives, weapons and drugs,” Semicond. Sci. Technol. 20, 266–280 (2005).
[Crossref]

Ikonic, Z.

Indjin, D.

Jen, A. K.-Y.

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
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P. U. Jepsen, D. G. Cooke, and M. Koch, “Terahertz spectroscopy and imaging - modern techniques and applications,” Laser Photonics Rev. 5(1), 124–166 (2011).
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A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
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Kaiser, A.

H. Sherry, J. Grzyb, Y. Zhao, R. Al Hadi, A. Cathelin, A. Kaiser, and U. Pfeiffer, “A 1k Pixel CMOS Camera Chip for 25 fps Real-Time,” in Proceedings of IEEE Conference on Solid-State Circuits (IEEE, 2012), pp. 252–254.

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A. H. Andersen and A. C. Kak, “Simultaneous algebraic reconstruction technique (SART): a superior implementation of the ART algorithm,” Ultrasonic Imaging 6, 81–94 (1984).
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L. Hai-Bo, H. Zhong, N. Karpowicz, Y. Chen, and Z. Xi-Cheng, “Terahertz spectroscopy and imaging for defense and security applications,” Proc. IEEE 95(8), 1514–1527 (2007).
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A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
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Khitrova, G.

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Klettke, A. C.

B. Ewers, N. S. Köster, R. Woscholski, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, and S. W. Koch, “Ionization of coherent excitons by strong terahertz fields,” Phys. Rev. B 85(7), 075307 (2012).
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Knap, W.

Koch, M.

S. Busch, T. Probst, M. Schwerdtfeger, R. Dietz, J. Palaci, and M. Koch, “Terahertz transceiver concept,” Opt. Express 22(14) 16841–16846 (2014).
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B. Ewers, N. S. Köster, R. Woscholski, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, and S. W. Koch, “Ionization of coherent excitons by strong terahertz fields,” Phys. Rev. B 85(7), 075307 (2012).
[Crossref]

P. U. Jepsen, D. G. Cooke, and M. Koch, “Terahertz spectroscopy and imaging - modern techniques and applications,” Laser Photonics Rev. 5(1), 124–166 (2011).
[Crossref]

Koch, S. W.

B. Ewers, N. S. Köster, R. Woscholski, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, and S. W. Koch, “Ionization of coherent excitons by strong terahertz fields,” Phys. Rev. B 85(7), 075307 (2012).
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Köster, N. S.

B. Ewers, N. S. Köster, R. Woscholski, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, and S. W. Koch, “Ionization of coherent excitons by strong terahertz fields,” Phys. Rev. B 85(7), 075307 (2012).
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A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
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Lamponi, M.

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Linfield, E.

Linfield, E. H.

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A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
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K. J. Siebert, H. Quast, R. Leonhardt, T. Löffler, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch, “Continuous-wave all-optoelectronic terahertz imaging,” Appl. Phys. Letters 80(16), 3003–3005 (2002).
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S. Mukherjee, J. Federici, P. Lopes, and M. Cabral, “Elimination of Fresnel reflection boundary effects and beam steering in pulsed terahertz computed tomography,” J. Infrared Millim. Te. 34, 539–555 (2013).
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P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
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S. Preu, G. Döhler, S. Malzer, L. Wang, and A. Gossard, “Tunable, continuous-wave Terahertz photomixer sources and applications,” Appl. Phys. 109(6), 061301 (2011).
[Crossref]

Manek-Hönninger, I.

J. P. Guillet, B. Recur, L. Frederique, B. Bousquet, L. Canioni, I. Manek-Hönninger, P. Desbarats, and P. Mounaix, “Review of terahertz tomography techniques,” J. Infrared Millim. Te. 35(4), 382–411 (2014)
[Crossref]

B. Recur, J. P. Guillet, I. Manek-Hönninger, J. C. Delagnes, W. Benharbone, P. Desbarats, J. P. Domenger, L. Canioni, and P. Mounaix, “Propagation beam consideration for 3D THz computed tomography,” Opt. Express 20, 5817–5829 (2012).
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Mayorga, I. C.

M. Langenbach, A. Roggenbuck, I. C. Mayorga, A. Deninger, K. Thirunavukkuarasu, J. Hemberger, and M. Grüninger, “Group delay in THz spectroscopy with ultra-wideband log-spiral antennae,” J. Infrared Millim. Te. 35, 918–931 (2014).
[Crossref]

A. Roggenbuck, H. Schmitz, A. Deninger, I. C. Mayorga, J. Hemberger, R. Güsten, and M. Grüninger, “Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples,” New J. Phys. 12, 043017 (2010).
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A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
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Mohr, T.

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
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Mounaix, P.

Mukherjee, S.

S. Mukherjee, J. Federici, P. Lopes, and M. Cabral, “Elimination of Fresnel reflection boundary effects and beam steering in pulsed terahertz computed tomography,” J. Infrared Millim. Te. 34, 539–555 (2013).
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M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
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A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
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Ng, B. W.-H.

B. S.-Y. Ung, B. M. Fischer, B. W.-H. Ng, and D. Abbott, “Towards quality control of food using terahertz,” Proc. SPIE 6799, 67991E (2007).
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Notni, G.

A. Brahm, A. Wilms, R. J. B. Dietz, T. Göbel, M. Schell, G. Notni, and A. Tünnermann, “Multichannel terahertz time-domain spectroscopy system at 1030 nm excitation wavelength,” Opt. Express 22(11), 12982–12993(2014).
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Oliveira, F.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications - explosives, weapons and drugs,” Semicond. Sci. Technol. 20, 266–280 (2005).
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Palenstijn, W. J.

W. J. Palenstijn, K. J. Batenburg, and J. Sijbers, “The ASTRA tomography toolbox,” in Proceedings of 13th International Conference on Computational and Mathematical Methods in Science and Engineering (CMMSE, 2013), pp. 1–7.

Patel, S.

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
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Pepper, M.

Pfeiffer, U.

H. Sherry, J. Grzyb, Y. Zhao, R. Al Hadi, A. Cathelin, A. Kaiser, and U. Pfeiffer, “A 1k Pixel CMOS Camera Chip for 25 fps Real-Time,” in Proceedings of IEEE Conference on Solid-State Circuits (IEEE, 2012), pp. 252–254.

Polishak, B.

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
[Crossref]

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S. Preu, G. Döhler, S. Malzer, L. Wang, and A. Gossard, “Tunable, continuous-wave Terahertz photomixer sources and applications,” Appl. Phys. 109(6), 061301 (2011).
[Crossref]

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Quast, H.

K. J. Siebert, H. Quast, R. Leonhardt, T. Löffler, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch, “Continuous-wave all-optoelectronic terahertz imaging,” Appl. Phys. Letters 80(16), 3003–3005 (2002).
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Rasel, E.M.

M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
[Crossref]

Recur, B.

Renaud, C. C.

Roggenbuck, A.

M. Langenbach, A. Roggenbuck, I. C. Mayorga, A. Deninger, K. Thirunavukkuarasu, J. Hemberger, and M. Grüninger, “Group delay in THz spectroscopy with ultra-wideband log-spiral antennae,” J. Infrared Millim. Te. 35, 918–931 (2014).
[Crossref]

A. Roggenbuck, H. Schmitz, A. Deninger, I. C. Mayorga, J. Hemberger, R. Güsten, and M. Grüninger, “Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples,” New J. Phys. 12, 043017 (2010).
[Crossref]

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A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
[Crossref]

K. J. Siebert, H. Quast, R. Leonhardt, T. Löffler, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch, “Continuous-wave all-optoelectronic terahertz imaging,” Appl. Phys. Letters 80(16), 3003–3005 (2002).
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[Crossref]

Schmitz, H.

A. Roggenbuck, H. Schmitz, A. Deninger, I. C. Mayorga, J. Hemberger, R. Güsten, and M. Grüninger, “Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples,” New J. Phys. 12, 043017 (2010).
[Crossref]

Schubert, Ch.

M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
[Crossref]

Schulkin, B.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications - explosives, weapons and drugs,” Semicond. Sci. Technol. 20, 266–280 (2005).
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Schwerdtfeger, M.

Seeds, A. J.

Seliuta, D.

A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
[Crossref]

Sherry, H.

H. Sherry, J. Grzyb, Y. Zhao, R. Al Hadi, A. Cathelin, A. Kaiser, and U. Pfeiffer, “A 1k Pixel CMOS Camera Chip for 25 fps Real-Time,” in Proceedings of IEEE Conference on Solid-State Circuits (IEEE, 2012), pp. 252–254.

Siebert, K. J.

K. J. Siebert, H. Quast, R. Leonhardt, T. Löffler, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch, “Continuous-wave all-optoelectronic terahertz imaging,” Appl. Phys. Letters 80(16), 3003–3005 (2002).
[Crossref]

Sijbers, J.

W. J. Palenstijn, K. J. Batenburg, and J. Sijbers, “The ASTRA tomography toolbox,” in Proceedings of 13th International Conference on Computational and Mathematical Methods in Science and Engineering (CMMSE, 2013), pp. 1–7.

Simonetta, M.

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
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Skotnicki, T.

Socher, E.

A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
[Crossref]

Song, H. J.

H. J. Song and T. Nagatsuma, “Present and future of terahertz communications,” IEEE Trans. Terahertz Sci. Technol. 1(1), 256–263 (2011).
[Crossref]

Teppe, F.

Thirunavukkuarasu, K.

M. Langenbach, A. Roggenbuck, I. C. Mayorga, A. Deninger, K. Thirunavukkuarasu, J. Hemberger, and M. Grüninger, “Group delay in THz spectroscopy with ultra-wideband log-spiral antennae,” J. Infrared Millim. Te. 35, 918–931 (2014).
[Crossref]

Thomson, M.

K. J. Siebert, H. Quast, R. Leonhardt, T. Löffler, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch, “Continuous-wave all-optoelectronic terahertz imaging,” Appl. Phys. Letters 80(16), 3003–3005 (2002).
[Crossref]

Tnnermann, A.

A. Brahm, A. Wilms, M. Tymoshchuk, C. Grossmann, G. Notni, and A. Tnnermann, “Optical effects at projection measurements for terahertz tomography,” Opt. Laser Technol. 62, 49–57 (2014).
[Crossref]

Tünnermann, A.

Twieg, R. J.

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
[Crossref]

Tymoshchuk, M.

A. Brahm, A. Wilms, M. Tymoshchuk, C. Grossmann, G. Notni, and A. Tnnermann, “Optical effects at projection measurements for terahertz tomography,” Opt. Laser Technol. 62, 49–57 (2014).
[Crossref]

Ung, B. S.-Y.

B. S.-Y. Ung, B. M. Fischer, B. W.-H. Ng, and D. Abbott, “Towards quality control of food using terahertz,” Proc. SPIE 6799, 67991E (2007).
[Crossref]

Valavanis, A.

Valdes, N. N.

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
[Crossref]

Vallejo, F. A.

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
[Crossref]

Valuis, G.

A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
[Crossref]

van Dijk, F.

Venckevicius, R.

A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
[Crossref]

Videlier, H.

Wang, L.

S. Preu, G. Döhler, S. Malzer, L. Wang, and A. Gossard, “Tunable, continuous-wave Terahertz photomixer sources and applications,” Appl. Phys. 109(6), 061301 (2011).
[Crossref]

Wendrich, T.

M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
[Crossref]

Williams, J. C.

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
[Crossref]

Wilms, A.

A. Brahm, A. Wilms, M. Tymoshchuk, C. Grossmann, G. Notni, and A. Tnnermann, “Optical effects at projection measurements for terahertz tomography,” Opt. Laser Technol. 62, 49–57 (2014).
[Crossref]

A. Brahm, A. Wilms, R. J. B. Dietz, T. Göbel, M. Schell, G. Notni, and A. Tünnermann, “Multichannel terahertz time-domain spectroscopy system at 1030 nm excitation wavelength,” Opt. Express 22(11), 12982–12993(2014).
[Crossref] [PubMed]

Woscholski, R.

B. Ewers, N. S. Köster, R. Woscholski, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, and S. W. Koch, “Ionization of coherent excitons by strong terahertz fields,” Phys. Rev. B 85(7), 075307 (2012).
[Crossref]

Wübbena, T.

M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
[Crossref]

Xi-Cheng, Z.

L. Hai-Bo, H. Zhong, N. Karpowicz, Y. Chen, and Z. Xi-Cheng, “Terahertz spectroscopy and imaging for defense and security applications,” Proc. IEEE 95(8), 1514–1527 (2007).
[Crossref]

Younus, A.

Zaiser, M.

M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
[Crossref]

Zhao, Y.

H. Sherry, J. Grzyb, Y. Zhao, R. Al Hadi, A. Cathelin, A. Kaiser, and U. Pfeiffer, “A 1k Pixel CMOS Camera Chip for 25 fps Real-Time,” in Proceedings of IEEE Conference on Solid-State Circuits (IEEE, 2012), pp. 252–254.

Zhong, H.

L. Hai-Bo, H. Zhong, N. Karpowicz, Y. Chen, and Z. Xi-Cheng, “Terahertz spectroscopy and imaging for defense and security applications,” Proc. IEEE 95(8), 1514–1527 (2007).
[Crossref]

Zhou, X.-H.

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
[Crossref]

Zimdars, D.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications - explosives, weapons and drugs,” Semicond. Sci. Technol. 20, 266–280 (2005).
[Crossref]

Appl. Phys. (1)

S. Preu, G. Döhler, S. Malzer, L. Wang, and A. Gossard, “Tunable, continuous-wave Terahertz photomixer sources and applications,” Appl. Phys. 109(6), 061301 (2011).
[Crossref]

Appl. Phys. Lett. (1)

T. Mohr, S. Breuer, D. Blömer, M. Simonetta, S. Patel, M. Schlosser, A. Deninger, G. Birkl, G. Giuliani, and W. Elsäßer, “Terahertz homodyne self-mixing transmission spectroscopy,” Appl. Phys. Lett. 106, 061111 (2015).
[Crossref]

Appl. Phys. Letters (1)

K. J. Siebert, H. Quast, R. Leonhardt, T. Löffler, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch, “Continuous-wave all-optoelectronic terahertz imaging,” Appl. Phys. Letters 80(16), 3003–3005 (2002).
[Crossref]

IEEE Trans. Terahertz Sci. Technol. (1)

H. J. Song and T. Nagatsuma, “Present and future of terahertz communications,” IEEE Trans. Terahertz Sci. Technol. 1(1), 256–263 (2011).
[Crossref]

J. Appl. Phys (1)

P. D. Cunningham, N. N. Valdes, F. A. Vallejo, L. M. Hayden, B. Polishak, X.-H. Zhou, J. Luo, A. K.-Y. Jen, J. C. Williams, and R. J. Twieg, “Broadband terahertz characterization of the refractive index and absorption of some important polymeric and organic electro-optic materials,” J. Appl. Phys 109, 043505 (2011).
[Crossref]

J. Infrared Millim. Te. (4)

S. Mukherjee, J. Federici, P. Lopes, and M. Cabral, “Elimination of Fresnel reflection boundary effects and beam steering in pulsed terahertz computed tomography,” J. Infrared Millim. Te. 34, 539–555 (2013).
[Crossref]

M. Langenbach, A. Roggenbuck, I. C. Mayorga, A. Deninger, K. Thirunavukkuarasu, J. Hemberger, and M. Grüninger, “Group delay in THz spectroscopy with ultra-wideband log-spiral antennae,” J. Infrared Millim. Te. 35, 918–931 (2014).
[Crossref]

J. P. Guillet, B. Recur, L. Frederique, B. Bousquet, L. Canioni, I. Manek-Hönninger, P. Desbarats, and P. Mounaix, “Review of terahertz tomography techniques,” J. Infrared Millim. Te. 35(4), 382–411 (2014)
[Crossref]

A. Lisauskas, M. Bauer, S. Boppel, M. Mundt, B. Khamaisi, E. Socher, R. Venckevicius, L. Minkevicius, I. KaȈsalynas, D. Seliuta, G. Valuis, V. Krozer, and H. G. Roskos, “Exploration of terahertz imaging with silicon MOSFETs,” J. Infrared Millim. Te. 35(1), 63–80 (2014).
[Crossref]

Laser Photonics Rev. (1)

P. U. Jepsen, D. G. Cooke, and M. Koch, “Terahertz spectroscopy and imaging - modern techniques and applications,” Laser Photonics Rev. 5(1), 124–166 (2011).
[Crossref]

New J. Phys. (1)

A. Roggenbuck, H. Schmitz, A. Deninger, I. C. Mayorga, J. Hemberger, R. Güsten, and M. Grüninger, “Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples,” New J. Phys. 12, 043017 (2010).
[Crossref]

Opt. Commun. (1)

M. Gilowski, Ch. Schubert, M. Zaiser, W. Herr, T. Wübbena, T. Wendrich, T. Müller, E.M. Rasel, and W. Ertmer, “Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms,” Opt. Commun. 280(2) 443–447 (2007)
[Crossref]

Opt. Express (6)

Opt. Laser Technol. (1)

A. Brahm, A. Wilms, M. Tymoshchuk, C. Grossmann, G. Notni, and A. Tnnermann, “Optical effects at projection measurements for terahertz tomography,” Opt. Laser Technol. 62, 49–57 (2014).
[Crossref]

Opt. Lett. (1)

Phys. Rev. B (1)

B. Ewers, N. S. Köster, R. Woscholski, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, A. C. Klettke, M. Kira, and S. W. Koch, “Ionization of coherent excitons by strong terahertz fields,” Phys. Rev. B 85(7), 075307 (2012).
[Crossref]

Proc. IEEE (1)

L. Hai-Bo, H. Zhong, N. Karpowicz, Y. Chen, and Z. Xi-Cheng, “Terahertz spectroscopy and imaging for defense and security applications,” Proc. IEEE 95(8), 1514–1527 (2007).
[Crossref]

Proc. SPIE (1)

B. S.-Y. Ung, B. M. Fischer, B. W.-H. Ng, and D. Abbott, “Towards quality control of food using terahertz,” Proc. SPIE 6799, 67991E (2007).
[Crossref]

Semicond. Sci. Technol. (1)

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications - explosives, weapons and drugs,” Semicond. Sci. Technol. 20, 266–280 (2005).
[Crossref]

Ultrasonic Imaging (1)

A. H. Andersen and A. C. Kak, “Simultaneous algebraic reconstruction technique (SART): a superior implementation of the ART algorithm,” Ultrasonic Imaging 6, 81–94 (1984).
[Crossref] [PubMed]

Other (4)

W. J. Palenstijn, K. J. Batenburg, and J. Sijbers, “The ASTRA tomography toolbox,” in Proceedings of 13th International Conference on Computational and Mathematical Methods in Science and Engineering (CMMSE, 2013), pp. 1–7.

M. McFadden, Analysis of the equiangular spiral antenna (Georgia Institute of Technology, 2009).

H. Sherry, J. Grzyb, Y. Zhao, R. Al Hadi, A. Cathelin, A. Kaiser, and U. Pfeiffer, “A 1k Pixel CMOS Camera Chip for 25 fps Real-Time,” in Proceedings of IEEE Conference on Solid-State Circuits (IEEE, 2012), pp. 252–254.

D. Saeedkia, Handbook of Terahertz Technology for Imaging, Sensing and Communications (Elsevier Science and Technology, 2013).
[Crossref]

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Figures (5)

Fig. 1
Fig. 1 Schematic of the experimental set-up. ECDL, external cavity diode laser; LD - laser diode; IF - interference filter; CER - partial Cat-Eye-Reflector; ISO - optical isolator; FC-PCA, fiber-coupled photoconductive antenna; SiL, silicon lens; RCW, revolving chopper wheel; TIA, transimpedance amplifier; LIA, lock-in amplifier, OSC - digital oscilloscope. Dimensions of the hollow-core Teflon cylinder are: of wall-thickness t and cylinder diameter d.
Fig. 2
Fig. 2 Measured HSM signals (solid, blue) at a terahertz frequency of 0.539 THz without sample (left) and with sample center congruent to PCA center (right) versus displacement z of the RCW. (Dashed, red) Curve fitting of measured data to Eq. (2) (left) and Eq. (3) (right).
Fig. 3
Fig. 3 Obtained HSM signal amplitudes I0 for a sample scan in x-direction for a rotation angle Θy of 0° without (empty red circles) and with (filled blue circles) α-Lactose filling for terahertz frequencies of 0.19 THz (left) and 0.539 THz (right). A photograph of half of the investigated Teflon cylinder scaled to the axis dimensions should serve as a guide to the eye.
Fig. 4
Fig. 4 (left) Exemplary geometrical set-ups used for the analysis with the ray tracing software ZEMAX. The source is a circular Gaussian source with a radius of 4 mm followed by a paraxial lens with a focal length of 21 mm. The sample is modeled by two cylinders with refractive indices of 1.41 (Teflon) and 1.79 (α–Lactose) which are displaced in x-direction. At a distance of 40 mm from the source a mirror back-reflects the calculated rays to the detector, which is located at the source position. (right) By the ray tracing software ZEMAX calculated normalized intensities at the detector versus the displacement of the Teflon cylinder in x-direction.
Fig. 5
Fig. 5 Reconstructed two-dimensional image in a logarithmic representation at a terahertz frequency of 0.19 THz (left) and 0.539 THz (right) of the Teflon cylinder filled with α-Lactose utilizing the SART algorithm.

Equations (3)

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

I ( z ) = I 0 cos ( 4 π λ z ) .
I x = 0 m m ( z ) = I 0 , x = 0 m m cos ( 4 π λ ( z 0 + z ) )
I x = 14 m m ( z ) = I 0 , x = 14 m m cos ( 4 π λ ( z 0 + z + d ( n 1 ) ) ) .

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