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Terahertz Imaging Progress at Capital Normal University

Received: 1 August 2017     Accepted: 28 October 2017     Published: 1 December 2017
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Abstract

The progress on terahertz imaging at Capital Normal University in Beijing is presented. Our works on Terahertz Imaging include the active and passive imaging. For the active terahertz imaging, the pulse and continue wave terahertz imaging are studied, respectively. The active terahertz pulse imaging is based on the terahertz time-domain spectroscopy (THz-TDS). A practical focus-plane imaging system is built up based on the THz-TDS with the probe-beam-expanded electro-optical sampling and an infrared CCD imaging. The active terahertz continuous wave imaging is based on a CO2-laser-pumped terahertz coherent source and an uncooled bolometer array of terahertz camera. The active terahertz polarization imaging and wave front imaging is developed. For the passive terahertz imaging, the low frequency of radiometers are used to detect the point-to-point beam-scanned terahertz signal by the optical focusing and scanning system so that the passive THz imaging is realized for the security inspection of human body. The related components and image processing methods are studied and used for the improvement of imaging speed and resolution. The research on THz imaging technology at Capital Normal University is opening up a potential application in the field of non-destructive testing and security inspection for the terahertz technology.

Published in International Journal of Astrophysics and Space Science (Volume 5, Issue 5)
DOI 10.11648/j.ijass.20170505.12
Page(s) 79-84
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Terahertz, Active, Passive, Imaging, Non-destructive Testing, Security Inspection

References
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Cite This Article
  • APA Style

    Guozhong Zhao, Jiayi Yu, Yashang Li, Jia Wang. (2017). Terahertz Imaging Progress at Capital Normal University. International Journal of Astrophysics and Space Science, 5(5), 79-84. https://doi.org/10.11648/j.ijass.20170505.12

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    ACS Style

    Guozhong Zhao; Jiayi Yu; Yashang Li; Jia Wang. Terahertz Imaging Progress at Capital Normal University. Int. J. Astrophys. Space Sci. 2017, 5(5), 79-84. doi: 10.11648/j.ijass.20170505.12

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    AMA Style

    Guozhong Zhao, Jiayi Yu, Yashang Li, Jia Wang. Terahertz Imaging Progress at Capital Normal University. Int J Astrophys Space Sci. 2017;5(5):79-84. doi: 10.11648/j.ijass.20170505.12

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  • @article{10.11648/j.ijass.20170505.12,
      author = {Guozhong Zhao and Jiayi Yu and Yashang Li and Jia Wang},
      title = {Terahertz Imaging Progress at Capital Normal University},
      journal = {International Journal of Astrophysics and Space Science},
      volume = {5},
      number = {5},
      pages = {79-84},
      doi = {10.11648/j.ijass.20170505.12},
      url = {https://doi.org/10.11648/j.ijass.20170505.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijass.20170505.12},
      abstract = {The progress on terahertz imaging at Capital Normal University in Beijing is presented. Our works on Terahertz Imaging include the active and passive imaging. For the active terahertz imaging, the pulse and continue wave terahertz imaging are studied, respectively. The active terahertz pulse imaging is based on the terahertz time-domain spectroscopy (THz-TDS). A practical focus-plane imaging system is built up based on the THz-TDS with the probe-beam-expanded electro-optical sampling and an infrared CCD imaging. The active terahertz continuous wave imaging is based on a CO2-laser-pumped terahertz coherent source and an uncooled bolometer array of terahertz camera. The active terahertz polarization imaging and wave front imaging is developed. For the passive terahertz imaging, the low frequency of radiometers are used to detect the point-to-point beam-scanned terahertz signal by the optical focusing and scanning system so that the passive THz imaging is realized for the security inspection of human body. The related components and image processing methods are studied and used for the improvement of imaging speed and resolution. The research on THz imaging technology at Capital Normal University is opening up a potential application in the field of non-destructive testing and security inspection for the terahertz technology.},
     year = {2017}
    }
    

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    AU  - Jiayi Yu
    AU  - Yashang Li
    AU  - Jia Wang
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    JF  - International Journal of Astrophysics and Space Science
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    AB  - The progress on terahertz imaging at Capital Normal University in Beijing is presented. Our works on Terahertz Imaging include the active and passive imaging. For the active terahertz imaging, the pulse and continue wave terahertz imaging are studied, respectively. The active terahertz pulse imaging is based on the terahertz time-domain spectroscopy (THz-TDS). A practical focus-plane imaging system is built up based on the THz-TDS with the probe-beam-expanded electro-optical sampling and an infrared CCD imaging. The active terahertz continuous wave imaging is based on a CO2-laser-pumped terahertz coherent source and an uncooled bolometer array of terahertz camera. The active terahertz polarization imaging and wave front imaging is developed. For the passive terahertz imaging, the low frequency of radiometers are used to detect the point-to-point beam-scanned terahertz signal by the optical focusing and scanning system so that the passive THz imaging is realized for the security inspection of human body. The related components and image processing methods are studied and used for the improvement of imaging speed and resolution. The research on THz imaging technology at Capital Normal University is opening up a potential application in the field of non-destructive testing and security inspection for the terahertz technology.
    VL  - 5
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Author Information
  • Department of Physics, Capital Normal University, Beijing, China

  • Department of Physics, Capital Normal University, Beijing, China

  • Department of Physics, Capital Normal University, Beijing, China

  • Department of Physics, Capital Normal University, Beijing, China

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