Application of a high temperature superconducting detector to terahertz imaging

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Authors

Colleges, School and Institutes

External organisations

  • CSIRO Ict Centre
  • CSIrO

Abstract

The performance of a high temperature superconducting junction detector is evaluated. The detector has been built to explore applications of terahertz imaging. The detector device is a high-temperature superconductor (HTS) Josephson junction, which is integrated with a thin-film ring-slot antenna. The ring-slot antenna is patterned on a magnesium oxide (MgO) substrate which is compatible with the detector's YBCO superconducting material lattice. A hyper-hemispherical lens made from high resistivity float zone silicon (HRFZ-Si) is mounted on the rear side of the substrate. The lens couples energy from an imaging system onto the antenna which couples the energy into the device. An existing terahertz imaging system is used in conjunction with the detector to allow for the exploration of relevant applications. The imaging system is based on a conventional quasi-optical design with a backward-wave oscillator as the source and raster scans samples for image acquisition. The imaging capability of the system has been assessed by trialing a range of applications in both transmission and reflection modes. Applications explored include imaging concealed weapons in packaging, non-destructive testing of materials, and imaging devices through plastic structures. The results generated by the imaging system demonstrate its capability for these applications.

Details

Original languageEnglish
Title of host publicationTerahertz Physics, Devices, and Systems III
Subtitle of host publicationAdvanced Applications in Industry and Defense
Publication statusPublished - 8 Sep 2009
EventTerahertz Physics, Devices, and Systems III: Advanced Applications in Industry and Defense - Orlando, FL, United States
Duration: 14 Apr 200915 Apr 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7311
ISSN (Print)0277-786X

Conference

ConferenceTerahertz Physics, Devices, and Systems III: Advanced Applications in Industry and Defense
CountryUnited States
CityOrlando, FL
Period14/04/0915/04/09