With the development of ultra-fast laser technology and the further cognition of terahertz（THz） wave and pulse light sources, THz technologies are actively developed for a variety of applications in security detector, antiterrorism, medical diagnosis and imaging, biotechnology, electron counterwork and information areas, which show that it has a broad foreground. In this paper, we place emphases on introducing the advantages of THz, which is compared with the infrared and microwave technology, applied to the communication area and the recent ...
