Tomographic imaging using photonically generated low-coherence terahertz noise sources

Takayuki Isogawa, Takuto Kumashiro, Ho Jin Song, Katsuhiro Ajito, Naoya Kukutsu, Katsumi Iwatsuki, Tadao Nagatsuma

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


Three-dimensional (3D) terahertz (THz) imaging or THz tomography has recently proven to be powerful for non-destructive testing of industrial materials and structures. In order to reduce complexity and cost of conventional THz tomography systems, we propose a new approach using broadband THz noise sources based on amplified spontaneous emission noise, which is analogous to the optical coherence tomography (OCT) using broadband infrared sources. We have experimentally demonstrated a 3D imaging system with depth and spatial resolutions of 1 and 2 mm, respectively, by 280-380 GHz band noise signals.

Original languageEnglish
Article number6287627
Pages (from-to)485-492
Number of pages8
JournalIEEE Transactions on Terahertz Science and Technology
Issue number5
Publication statusPublished - 2012


  • Imaging
  • low-coherence
  • noise sources
  • terahertz
  • tomography


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