Title :
High-Tc superconducting step-edge Josephson junction detector for terahertz imaging
Author :
Du, J. ; Macfarlane, J.C. ; Leslie, K.E. ; Foley, C.P. ; Hellicar, A.D. ; Li, L. ; Hanham, S.M.
Author_Institution :
CSIRO Mater. Sci. & Eng., Sydney, NSW, Australia
Abstract :
We describe here the realization of a terahertz (THz) imager based on a high-Tc superconducting (HTS) Josephson junction detector. The detector, made of an YBa2Cu3O7-x (YBCO) step-edge junction, is coupled to a thin-film antenna and a hemispheric silicon lens. Images of high visual quality are obtained at temperatures above 77 K. The results demonstrated the potential of a HTS superconducting detector based THz imaging system. The design, implementation and characterization of the HTS Josephson detector and imaging system together with some images acquired will be presented.
Keywords :
Josephson effect; high-temperature superconductors; superconducting junction devices; terahertz wave imaging; HTS Josephson detector; HTS superconducting detector; High-Tc superconductor; THz imaging system; YBCO step-edge junction; hemispheric silicon lens; step-edge Josephson junction; terahertz imaging; thin-film antenna; Etching; Frequency; High temperature superconductors; Josephson junctions; Optical imaging; Radiation detectors; Silicon; Substrates; Voltage; Yttrium barium copper oxide; component; detector; high-Tc superconductor; step-edge Josephson junction; terahertz imaging;
Conference_Titel :
Applied Superconductivity and Electromagnetic Devices, 2009. ASEMD 2009. International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3686-6
Electronic_ISBN :
978-1-4244-3687-3
DOI :
10.1109/ASEMD.2009.5306678
