16 Frames-per-Second Terahertz Time-Domain Imaging through a Plasmonic Photoconductive Focal-Plane Array

We present a terahertz time-domain imaging system based on a plasmonic photoconductive terahertz focal-plane array, which provides ultrafast-time-resolved and frequency-resolved amplitude and phase information of the imaged object with an imaging speed that exceeds 16 fps. The rich information provided by 283500 plasmonic nanoantennas used in the terahertz focal-plane array allows super-resolving both shape and depth information of imaged objects with a lateral/depth resolution as small as 60/10 µm and an effective number of pixels exceeding 1-kilo-pixels.