Nature Communications (Sep 2016)

Terahertz time-gated spectral imaging for content extraction through layered structures

  • Albert Redo-Sanchez,
  • Barmak Heshmat,
  • Alireza Aghasi,
  • Salman Naqvi,
  • Mingjie Zhang,
  • Justin Romberg,
  • Ramesh Raskar

DOI
https://doi.org/10.1038/ncomms12665
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 7

Abstract

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Terahertz radiation may be used to nondestructively detect and study defects and structures within materials. Here the authors use terahertz time-gated spectral imaging to extract occluded text from paper pages with subwavelength spacing.