Your browser does not support JavaScript!

access icon free Approaching real-time terahertz imaging with photo-induced coded apertures and compressed sensing

Photo-induced coded-aperture imaging (PI-CAI) based on compressed sensing (CS) at 590 GHz using a WR-1.5 (500–750 GHz) vector network analyser is demonstrated. For a 256-pixel (16 × 16) frame, the acquisition time can be reduced by 40%, as compared with PI-CAI without CS, while maintaining high imaging quality. On the basis of this approach, it is envisioned that real-time (26 fps) THz imaging with 1000 pixels (32 × 32) can be realised using high-speed digital micromirror device chipsets and optimised data-acquisition software.


    1. 1)
    2. 2)
    3. 3)
    4. 4)
    5. 5)
      • 3. Domier, C.W., Luhmann, N.C.Jr, Park, H.K., Xia, Z., Zhang, P.: ‘Advances in millimeter wave/THz plasma diagnostics instrumentation’. 32nd Int. Conf. Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Cardiff, UK, September 2007, pp. 811.
    6. 6)
    7. 7)
      • 11. Kannegulla, A., Jiang, Z., Rahman, S., Shams, M.I.B., Fay, P., Xing, H.G., Cheng, L.J., Liu, L.: ‘Coded-aperture imaging using photo-induced reconfigurable aperture arrays for mapping terahertz beams’. IEEE Trans. THz Sci. Technol., to appear, 2014.
    8. 8)
    9. 9)
    10. 10)
    11. 11)
      • 4. Smith, R., Sundstrom, B., Belcher, B., Ewen, D.: ‘Radiometric one second camera (ROSCAM) airborne evaluation’. SPIE Conf. Passive Millimeter-Wave Imaging Technology, 1999, pp. 212.
    12. 12)
    13. 13)
      • 8. Hawasli, S., Alijabarri, N., Weikle, R.M.II: ‘Schottky diode arrays for submillimeter-wave sideband generation’. 37th Int. Conf. Infrared, Millimeter, and Terahertz Waves, Wollongong, NSW, Australia, September 2012, pp. 12.

Related content

This article has following corresponding article(s):
seeing through a mask
This is a required field
Please enter a valid email address