Terahertz technology refers to the study and application of electromagnetic waves that fall within the terahertz frequency range, between infrared and microwave frequencies. This area of research is currently gaining attention due to its potential for various applications, including imaging, spectroscopy, communication, and material characterization. Terahertz waves have unique properties that make them useful for non-destructive testing, security screening, and medical imaging, among other things. Researchers are currently exploring ways to harness terahertz technology for practical applications and continue to make advancements in this field.