“…In the last few years, the rapid development of novel THz sources and detectors has opened additional possibilities of creating innovative imaging and sensing systems, allowing in situ measurements and real-time analysis of different materials. Advances in the field have encouraged new research in various disciplines, including chemistry, pharmacy, physics, materials science, medicine, archaeology, and biology (2)(3)(4)(5)(6)(7)(8). Several advantages of THz systems over other technologies-for example, X-ray tomography, gamma rays, IR imaging, and millimeter-wave imaging (6,(9)(10)(11)-have attracted interest in industry and led to the development of compact, relatively inexpensive, and even portable THz systems, which are now commercially available on different markets.…”