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Proceedings Paper

CW THz scanning transmission imaging for concealed object detection
Author(s): Qi Li; Rui Yao; Qiguo Yin; Shenghui Ding; Qi Wang
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Paper Abstract

In the paper, the two-dimensional THz imaging methods are described. The SIFIR-50 FPL Far-Infrared Laser is used as the THz source. The output frequency is 2.5THz in the experiment, because the THz laser operates steadily at this frequency. The P4-42 detector works at room temperature and offers relatively high sensitivity. The software of THz imaging system is self-designed, and it plays a crucial role in this imaging system because it controls nearly all the operations of this system, including the two-dimensional scanning, image data collection, image data storage, image display and image processing. Utilizing this setup, THz transmission images of concealed objects are obtained. In the experiment, a bottle cap and a plastic board covered by reflective materials are chosen as the imaging objects; paper and Teflon are placed before the object to test the transmission imaging effect. The experimental results show that this imaging system can generate clear images.

Paper Details

Date Published: 5 August 2009
PDF: 6 pages
Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 73850R (5 August 2009); doi: 10.1117/12.834706
Show Author Affiliations
Qi Li, Harbin Institute of Technology (China)
Rui Yao, Harbin Institute of Technology (China)
Qiguo Yin, Harbin Institute of Technology (China)
Shenghui Ding, Harbin Institute of Technology (China)
Qi Wang, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 7385:
International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications
X.-C. Zhang; James M. Ryan; Cun-lin Zhang; Chuan-xiang Tang, Editor(s)

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