THz computed tomography system with zero-order Bessel beam

Liting Niu; Qiao Wu; Kejia Wang; Jinsong Liu; Zhengang Yang

doi:10.1117/12.2295477

12 January 2018 THz computed tomography system with zero-order Bessel beam

Liting Niu, Qiao Wu, Kejia Wang, Jinsong Liu, Zhengang Yang

Proceedings Volume 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications; 1062303 (2018) https://doi.org/10.1117/12.2295477
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China

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.

Citation Download Citation

Liting Niu, Qiao Wu, Kejia Wang, Jinsong Liu, and Zhengang Yang "THz computed tomography system with zero-order Bessel beam", Proc. SPIE 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 1062303 (12 January 2018); https://doi.org/10.1117/12.2295477

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