Recent Development of Terahertz Wave Time-Domain Technology

Terahertz (THz) radiation, which occupies a large portion of the electromagnetic spectrum between the infrared and microwave bands, offers innovative imaging and sensing technologies that can provide information, which is not available through conventional methods (i.e. microwave and X-ray techniques.) Recently, governmental supported THz wave related fundamental research in science and application emphasized technology development has increased substantially. As THz wave (T-ray) technology improves, we believe new T-ray capabilities will impact a range of interdisciplinary fields, including: communications, imaging, medical diagnosis, health monitoring, environmental control, and chemical and biological identification. This is particularly crucial for identifying terrorist threats in homeland security (three to five years), and medical diagnosis or even clinical treatment in biomedical applications (five to ten years)