Terahertz radiation is a form of electromagnetic radiation that sits between microwave and infrared radiation on the electromagnetic spectrum. This type of radiation is also known as T-rays, submillimeter radiation, THz or terahertz waves. Other synonyms for terahertz radiation include T-waves, T-light, T-ray radiation, and terahertz radiation emission. This type of radiation has several potential applications in fields such as medicine, security, and telecommunications, among others. Despite its potential, terahertz radiation is still relatively unexplored and only recently catching the attention of researchers for its unique properties and potential uses.