Introduction to Terahertz Technology

Terahertz technology is unexplored frontier which bridges photonics and electronics. Following the description of the principles and characteristics of terahertz radiation, the generation and the detection technique of terahertz radiation are introduced. On the basis of the current development of terahertz sources and detectors, the application of terahertz technology, such as terahertz spectra, terahertz imaging, and terahertz communication is presented. The breakthrough of terahertz devices will prosper the economic development and solid the national security in the near future though the recent status of terahertz technology still faces great technical challenges.