Terahertz and millimetre wave imaging with a broadband josephson detector working above 77 K
Research output: Contribution to journal › Article › peer-review
Colleges, School and Institutes
- CSIRO Ict Centre
A high-T c superconducting (HTS) broadband Josephson detector has been developed and applied to millimetre wave (mm-wave) and terahertz (THz) imaging. The detector is based on a YBa 2Cu 3O 7-x (YBCO) step-edge Josephson junction, which is coupled to a thin-film log-periodic antenna, designed for operation at 200-600 GHz, and a hemispheric silicon lens. The junction parameters have been optimised to achieve a high I cR n value so that the detector responds well to the specified frequencies at liquid nitrogen temperature (77 K). Images at ∼200 GHz and ∼600 GHz were acquired with the same detector; each demonstrated their unique properties. The results demonstrate the potential of achieving a cheaper, compact and portable multi-spectral imager based on a HTS detector.
|Number of pages||10|
|Journal||Journal of Infrared, Millimeter, and Terahertz Waves|
|Publication status||Published - 1 May 2011|