Dayong WANG, Ran NING, Xiaoyu JIN, Lu RONG, Jie ZHAO, Yunxin WANG, Shufeng LIN. High-resolution Terahertz Computed Tomography Using 3D Printed Diffractive Elements（Invited）[J]. Acta Photonica Sinica, 2022, 51(7): 0751405
- Acta Photonica Sinica
- Vol. 51, Issue 7, 0751405 (2022)
Fig. 1. Shepp-Logan phantom and its sinogram
Fig. 2. Filtered back projection reconstruction results using different filters
Fig. 3. Modulation effect of THz BDL on illumination beam
Fig. 4. The basic structure of THz binary diffractive lens
Fig. 5. Comparison between simulated and experimental results of focused light field of terahertz binary diffractive lens
Fig. 6. The schematic setup of continuous wave THz CT
Fig. 7. Reconstructed 2D sectional images of a resin pipe using different convergence elements
Fig. 8. The comparison of transverse profiles of the reconstructed sectional images of the resin pipe
Fig. 9. 2D sectional and 3D tomographic reconstruction results of volume sample based on the proposed THz CT
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Table 1. Difference ratio of thickness and inner diameter reconstructed by THz CT to actual size under TPX lens and BDL lens
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