12 January 2018 THz computed tomography system with zero-order Bessel beam
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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.
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Liting Niu, Liting Niu, Qiao Wu, Qiao Wu, Kejia Wang, Kejia Wang, Jinsong Liu, Jinsong Liu, Zhengang Yang, 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); doi: 10.1117/12.2295477; https://doi.org/10.1117/12.2295477
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