Study of 3D imaging using a CW diode terahertz source for practical applications

The perspectives and trends of THz technology in material research for future communication - a comprehensive review

“…THz imaging is an important and prosperous non-destructive assessment technology for safety inspection, quality control [88][89][90][91][92][93], and fantastical applications as counting the number of almond bars using terahertz image detection techniques. A notable advantage of THz in the image process field is that THz radiation possesses the unique ability to penetrate common package materials, and may therefore give spectral information about the material inside.…”

“…In 2018, Yildirim et al [94] presented an active THz imaging automated biosecurity accessing and tracking gate system composed of terahertz imaging or scanning, autonomous conversion, and x-ray modules that are capabilities of detecting hidden objects on the human beings body. In 2018, Momivama et al [89] built a sweptsource optical coherence tomography system working at frequencies from 600 GHz to 665 GHz, which could be utilized in quality control. In 2018, Ryu et al [95] proposed a compact portable terahertz imaging system based on a single-mode Fabry-Perot laser diode that is low in cost and simple in structure.…”