Reflective single-pixel terahertz pulsed imaging

The investigation of single-pixel terahertz (THz) imaging opens up a new research direction for the development of THz imaging technology. In this work, we achieve a reflective single-pixel THz imaging system. By combining the compressed sensing (CS) and inverse Fresnel diffraction (IFD) algorithms, a reflective THz spectral image is accurately reconstructed and the morphology of a sample is clearly observed.