Real-time, continuous-wave terahertz (THz) imaging is demonstrated. A 1.89-THz optically-pumped far-infrared laser is used as the illumination source, and a 124×124 element room-temperature pyroelectric camera is adopted as the detector. With this setup, THz images through various wrapping materials are shown. The results show that this imaging system has the potential applications in real-time mail and security inspection.
© 2008 Chinese Optics Letters
(040.1240) Detectors : Arrays
(110.2970) Imaging systems : Image detection systems
(110.6820) Imaging systems : Thermal imaging
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
Jun Yang, Shuangchen Ruan, and Min Zhang, "Real-time, continuous-wave terahertz imaging by a pyroelectric camera," Chin. Opt. Lett. 6, 29-31 (2008)