A promising diagnostic method: Terahertz pulsed imaging and spectroscopy

Figure 5 Terahertz imaging of the tablet. A: Photograph of the tablet in the plastic package and THz C-Scan section imaging without the packaging; B: THz B-Scan image shows the structure of the cross-section of the tablet and the THz light paths at the edge of the tablet (path a) and the centre (path b); C: THz C-Scan image shows the tablet face inside the plastic package; D: THz deconvolved waveforms in the time-domain reflected from the paths a and b in Figure 5B.