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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 36 — Dec. 20, 2010
  • pp: 6834–6839

High-resolution terahertz reflective imaging and image restoration

Sheng-Hui Ding, Qi Li, Rui Yao, and Qi Wang  »View Author Affiliations

Applied Optics, Vol. 49, Issue 36, pp. 6834-6839 (2010)

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We present a high-resolution terahertz (THz) reflective imaging system, operating at 2.52 THz , that employs a continuous-wave THz gas laser and a pyroelectric detector. The spatial resolution was evaluated from the system’s modulation transfer function and tested by scanning a series of resolution targets. To further improve the image quality, Lucy–Richardson method was adopted to restore the scanning result. With the scanning spot profile measured using knife edge method, a satisfying restoration result can be obtained. Finally, the system’s performance was observed by imaging some different test objects.

© 2010 Optical Society of America

OCIS Codes
(100.3020) Image processing : Image reconstruction-restoration
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Imaging Systems

Original Manuscript: July 23, 2010
Revised Manuscript: October 19, 2010
Manuscript Accepted: October 30, 2010
Published: December 13, 2010

Sheng-Hui Ding, Qi Li, Rui Yao, and Qi Wang, "High-resolution terahertz reflective imaging and image restoration," Appl. Opt. 49, 6834-6839 (2010)

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  1. R. M. Woodward, “Terahertz technology in global homeland security,” Proc. SPIE 5781, 22–31 (2005). [CrossRef]
  2. E. Pickwell and V. P. Wallace, “Biomedical applications of terahertz technology,” J. Phys. D 39, R301–R310 (2006). [CrossRef]
  3. H. B. Wallace, “Analysis of RF imaging applications at frequencies over 100GHz,” Appl. Opt. 49, E38–E47 (2010). [CrossRef] [PubMed]
  4. C. Jansen, S. Wietzke, O. Peters, M. Scheller, N. Vieweg, M. Salhi, N. Krumbholz, C. Jördens, T. Hochrein, and M. Koch, “Terahertz imaging: applications and perspectives,” Appl. Opt. 49, E48–E57 (2010). [CrossRef] [PubMed]
  5. B. B. Hu and M. C. Nuss, “Imaging with terahertz waves,” Opt. Lett. 20, 1716–1718 (1995). [CrossRef] [PubMed]
  6. T. Löffler, T. May, C. am Weg, A. Alcin, B. Hils, and H. G. Roskos, “Continuous-wave terahertz imaging with a hybrid system,” Appl. Phys. Lett. 90, 091111 (2007). [CrossRef]
  7. Z. D. Taylor, R. S. Singh, E. R. Brown, J. E. Bjarnason, M. P. Hanson, and A. C. Gossard, “A reflection based, pulsed THz imaging system with 1mm spatial resolution,” in Microwave Symposium, 2007. IEEE/MTT-S International (IEEE, 2007), pp. 1161–1164. [CrossRef]
  8. H. Richter, M. Greiner-Bär, S. G. Pavlov, A. D. Semenov, M. Wienold, L. Schrottke, M. Giehler, R. Hey, H. T. Grahn, and H.-W. Hübers, “A compact, continuous-wave terahertz source based on a quantum-cascade laser and a miniature cryocooler,” Opt. Express 18, 10177–10187 (2010). [CrossRef] [PubMed]
  9. M. A. Salhi, I. Pupeza, and M. Koch, “Confocal THz laser microscope,” J. Infrared Milli. Terahz. Waves 31, 358–366 (2010).
  10. N. N. Zinov’ev, A. V. Andrianov, A. J. Gallant, J. M. Chamberlain, and V. N. Trukhin, “Contrast and resolution enhancement in a confocal terahertz video system,” JETP Lett. 88, 492–495(2009). [CrossRef]
  11. N. N. Zinov’ev and A. V. Andrianov, “Confocal terahertz imaging,” Appl. Phys. Lett. 95, 011114 (2009). [CrossRef]
  12. Y. Li, L. Li, A. Hellicar, and Y. J. Guo, “Super-resolution reconstruction of terahertz images,” Proc. SPIE 6949, 69490J(2008). [CrossRef]
  13. Q. Li, Q. Yin, R. Yao, S. Ding, and Q. Wang, “Continuous-wave terahertz scanning image resolution analysis and restoration,” Opt. Eng. 49, 037007 (2010). [CrossRef]
  14. Z. D. Taylor, R. S. Singh, M. O. Culjat, J. Y. Suen, W. S. Grundfest, H. Lee, and E. R. Brown, “Reflective terahertz imaging of porcine skin burns,” Opt. Lett. 33, 1258–1260 (2008). [CrossRef] [PubMed]
  15. P. Dean, S. Khanna, S. Chakraborty, M. Lachab, A. G. Davies, and E. H. Linfield, “Diffuse reflection imaging at terahertz frequencies for security applications,” Proc. SPIE 6741, 67410R (2007). [CrossRef]
  16. V. P. Wallace, E. MacPherson, J. A. Zeitler, and C. Reid, “Three-dimensional imaging of optically opaque materials using nonionizing terahertz radiation,” J. Opt. Soc. Am. A 25, 3120–3133 (2008). [CrossRef]
  17. S. Huang, P. C. Ashworth, K. W. C. Kan, Y. Chen, V. P. Wallace, Y.-T. Zhang, and E. Pickwell-MacPherson, “Improved sample characterization in terahertz reflection imaging and spectroscopy,” Opt. Express 17, 3848–3854 (2009). [CrossRef] [PubMed]
  18. Q. Li, R. Yao, Q. Yin, J. Shan, and Q. Wang, “2.52THz scanning reflection imaging and image preprocessing,” Proc. SPIE 7277, 72770J (2009).
  19. Q. Song, F. Yu, Y. Zhao, C. Zhang, Q. Yu, M. Liu, and X. Liu, “The restoration of CW THz images based on phase analysis,” Proc. SPIE 7443, 74432G (2009). [CrossRef]
  20. D. S. C. Biggs and M. Andrews, “Acceleration of iterative image restoration algorithms,” Appl. Opt. 36, 1766–1775 (1997). [CrossRef] [PubMed]
  21. E. Abraham, A. Younus, A. El Fatimy, J. C Delagnes, E. Nguéma, and P. Mounaix, “Broadband terahertz imaging of documents written with lead pencils,” Opt. Commun. 282, 3104–3107(2009). [CrossRef]

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