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Terahertz Computed Tomography Using A Continuous-Wave Gas Laser

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Abstract

A 3D continuous-wave (CW) terahertz computed tomography (CT) system employing a gas laser operating at 2.52 THz is presented. To shorten acquisition time on the premise of guaranteeing the image quality, the modified simultaneous algebraic reconstruction technique (MSART) coupled with image processing operations like the Gaussian low-pass filter (GLPF), open operation and close operation has been adopted in the paper. With the 2D results the 3D images of the samples have been also obtained. The reconstruction results illustrate the promising application prospects of this CW THz CT system.

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Authors and Affiliations

  1. National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, P.O. Box 3031, No.2 YiKuang Street, Harbin, 150080, China

    Qi Li, Yun-Da Li, Sheng-Hui Ding & Qi Wang

  2. Harbin Institute of Technology, P. O. BOX 3031, No.2 YiKuang Street, Harbin, Heilongjiang, China, 150081

    Qi Li

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  1. Qi Li
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  2. Yun-Da Li
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  3. Sheng-Hui Ding
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  4. Qi Wang
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Correspondence to Qi Li.

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Li, Q., Li, YD., Ding, SH. et al. Terahertz Computed Tomography Using A Continuous-Wave Gas Laser. J Infrared Milli Terahz Waves 33, 548–558 (2012). https://doi.org/10.1007/s10762-012-9897-7

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  • DOI: https://doi.org/10.1007/s10762-012-9897-7

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