A Terahertz Imaging Sensor is a device that can detect electromagnetic radiation in the Terahertz (THz) range, which is between infrared and microwaves on the electromagnetic spectrum. This type of sensor can be used to create images of objects by emitting and detecting THz radiation, allowing for high-resolution imaging. This technology is used in medical, security, and industrial applications, such as imaging through clothing or other materials, or detecting chemical compounds in the atmosphere.