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Proceedings Paper

THz computed tomography system with zero-order Bessel beam
Author(s): Liting Niu; Qiao Wu; Kejia Wang; Jinsong Liu; Zhengang Yang
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Paper Abstract

Terahertz (THz) waves can penetrate many optically opaque dielectric materials such as plastics, ceramics and colorants. It is effective to reveal the internal structures of these materials. We have built a THz Computed Tomography (CT) system with 0.3 THz zero-order Bessel beam to improve the depth of focus of this imaging system for the non-diffraction property of Bessel beam. The THz CT system has been used to detect a paper cup with a metal rod inside. Finally, the acquired projection data have been processed by the filtered back-projection algorithm and the reconstructed image of the sample has been obtained.

Paper Details

Date Published: 12 January 2018
PDF: 6 pages
Proc. SPIE 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 1062303 (12 January 2018); doi: 10.1117/12.2295477
Show Author Affiliations
Liting Niu, Huazhong Univ. of Science and Technology (China)
Qiao Wu, Huazhong Univ. of Science and Technology (China)
Kejia Wang, Huazhong Univ. of Science and Technology (China)
Jinsong Liu, Huazhong Univ. of Science and Technology (China)
Zhengang Yang, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10623:
2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications
Cunlin Zhang; Xi-Cheng Zhang; Zhiming Huang; Liquan Dong, Editor(s)

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