Terahertz imaging using a high-Tc superconducting Josephson junction detector

Research output: Contribution to journalArticlepeer-review


  • J. Du
  • A. D. Hellicar
  • L. Li
  • N. Nikolic
  • J. C. MacFarlane
  • K. E. Leslie

Colleges, School and Institutes

External organisations

  • CSIrO
  • CSIRO Ict Centre


A high-Tc superconducting (HTS) detector based on a YBa 2Cu3O7-x (YBCO) step-edge Josephson junction has been developed and applied to terahertz (THz) detection. The detector was coupled to a ring-slot antenna designed for operation at 600GHz, and used for THz imaging. The results suggest that the characteristic voltage and frequency of our HTS step-edge junctions can be readily optimized for the chosen THz frequency range at easily achievable temperatures. The images also clearly demonstrate some of the unique properties of THz radiation, including the sensitivity to water content and the ability to penetrate packaging materials.


Original languageEnglish
Article number125025
JournalSuperconductor Science and Technology
Issue number12
Publication statusPublished - 1 Dec 2008