Submillimeter wave technology is an interdisciplinary field of research and engineering focused on the generation, propagation, detection, and application of electromagnetic radiation in the frequency range approximately between 300 GHz and 3 THz (corresponding to wavelengths from 1 mm to 0.1 mm). This domain investigates the unique interactions of these waves with various materials, leveraging characteristics such as specific absorption and transmission properties for significant applications in areas like astrophysics, security screening, spectroscopy, and advanced imaging.