Real-time terahertz imaging with a single-pixel detector

Terahertz (THz) radiation is poised to have an essential role in many imaging applications, from industrial inspections to medical diagnosis. However, commercialization is prevented by impractical and expensive THz instrumentation. Single-pixel cameras have emerged as alternatives to multi-pixel cameras due to reduced costs and superior durability. Here, by optimizing the modulation geometry and post-processing algorithms, we demonstrate the acquisition of a THz-video (32 × 32 pixels at 6 frames-per-second), shown in real-time, using a single-pixel fiber-coupled photoconductive THz detector. A laser diode with a digital micromirror device shining visible light onto silicon acts as the spatial THz modulator. We…

• RS
  Royal Society
• NN
  National Natural Science Foundation of China

  Award: 51777023
• RG
  Research Grants Council, University Grants Committee

  Awards: 14206717, AoE/M-05/12, 14201415
• IA
  Innovation and Technology Commission

  Award: ITS/371/16
• IA
  Innovation and Technology Fund

  Award: ITS/371/16
• EA
  Engineering and Physical Sciences Research Council

  Awards: S021442/1, EP/S021442/1, EP/S021442/1