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Proceedings Paper

Terahertz continuous-wave transmission imaging system and its application in security inspections
Author(s): Yandong Zhang; Chao Deng; Wenfeng Sun; Yan Zhang; Cunlin Zhang
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Paper Abstract

A terahertz continuous-wave transmission imaging system and its applications in security inspections are reported. A Gunn oscillator is utilized as emitter and an unbiased Schottky diode is employed as detector in this system. The sample is placed on an X-Y two-dimensional stage which is controlled by a computer. The intensity information of the terahertz wave after passing though the sample is collected by the Schottky diode and fed into the computer. Two-dimensional image is obtained by scanning the sample point by point. Compared with the terahertz pulse imaging system, this system is compact, simple, and portable. Tennis bat with sheath and knife in the box are imaged by using this system. The results obtained here show that this new technology can be widely used in security inspections.

Paper Details

Date Published: 4 January 2008
PDF: 5 pages
Proc. SPIE 6840, Terahertz Photonics, 684010 (4 January 2008); doi: 10.1117/12.759553
Show Author Affiliations
Yandong Zhang, Capital Normal Univ. (China)
Chao Deng, Capital Normal Univ. (China)
Wenfeng Sun, Capital Normal Univ. (China)
Yan Zhang, Capital Normal Univ. (China)
Cunlin Zhang, Capital Normal Univ. (China)

Published in SPIE Proceedings Vol. 6840:
Terahertz Photonics
Cunlin Zhang; Xi-Cheng Zhang, Editor(s)

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