Dr. Robert Lindquist2025-12-232025-12-23https://dspace.academy.edu.ly/handle/123456789/1852The quality of the images is comparable to a backscattered x-ray, but THz waves offer unique properties that make the imaging superior to x-rays. First, terahertz radiation is non-ionizing and therefore of no risk to living material. Second, the backscatter of terahertz waves has a spectral signature related to the chemical composition of the scattering material. In other words, the backscatter has a spectral fingerprint allowing for discrimination of the chemical composition.Advances in the generation and detection of electromagnetic wave in the terahertz (THz) region over the past two decades has opened opportunities to the development of technologies that take advantage of a seldom used area of the electromagnetic spectrum. The terahertz region occupies the electromagnetic space between microwaves and the infrared optical band (from 30 microns to 1 mm). THz waves exhibit properties similar to x-rays and millimeter waves in that terahertz waves can propagate through thin layers of non-metallic substances like clothing, wood, plastic and ceramics.terahertz regime