Terahertz (THz) refers to a frequency range in the electromagnetic spectrum that lies between microwave and infrared radiation, specifically from 0.1 to 10 THz. This range is significant for various applications, including imaging, communications, and spectroscopy. Terahertz waves can penetrate materials like clothing and paper, making them useful for security screening and non-destructive testing. Research in terahertz technology is expanding rapidly, with potential uses in fields such as medicine, where it can help in detecting tumors, and in telecommunications, where it may enhance data transmission rates. The unique properties of terahertz radiation make it a promising area of study for future innovations.