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

fYear

2009

fDate

25-27 Sept. 2009

Firstpage

127

Lastpage

130

Abstract

We describe here the realization of a terahertz (THz) imager based on a high-T_c superconducting (HTS) Josephson junction detector. The detector, made of an YBa₂Cu₃O_7-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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ASEMD.2009.5306678

Filename

5306678