Phase-contrast THz-CT for non-destructive testing
نویسندگان
چکیده
A new approach for image reconstruction in THz computed tomography (THz-CT) is presented. Based on a geometrical optics model containing the signal amplitude and phase, novel algorithm extracting an average phase from measured signals derived. Applying results phase-contrast sinogram, which further used reconstruction. For experimental validation, fast time-domain spectrometer (THz-TDS) transmission geometry employed, enabling CT measurements within several minutes. Quantitative evaluation of reconstructed 3D printed plastic profiles reveals potential our non-destructive testing profiles.
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ژورنال
عنوان ژورنال: Optics Express
سال: 2021
ISSN: ['1094-4087']
DOI: https://doi.org/10.1364/oe.422961