Design of fast, high-resolution terahertz imaging system based on laser and nonlinear crystal LiNbO3

In this paper, we introduced the design of a fast, high-resolution terahertz imaging system based on nonlinear crystal LiNbO 3 . Compared with the fast developed THz pulse imaging technique, THz Continuous Wave imaging system has many advantages such as high average power, high integration, small volume, and low cost. So, THz Continuous Wave imaging system without the need of scanning system is one of the best ways to improve the imaging resolution and the speed of a THz imaging system at the same time.