Title :
Fabrication of terahertz YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// hot-electron bolometer mixers
Author :
Kleinsasser, A.W. ; Barner, J.B. ; Burns, M.J. ; Karasik, B.S. ; McGrath, W.R.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
6/1/1999 12:00:00 AM
Abstract :
Superconducting hot-electron bolometer (HEB) mixers are promising heterodyne detectors for THz frequencies. HEB mixers operating at 4 K or below offer the possibility of near-quantum-limited performance without an upper frequency limit imposed by the superconducting energy gap. High temperature superconductor HEB mixers offer very sensitive, low power heterodyne detectors operating at temperatures approaching 90 K for applications requiring closed-cycle refrigeration. We report on recent progress in fabricating and characterizing high-T/sub c/ mixers based on ultra-thin (10-20 nm) YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// films patterned to submicrometer dimensions (0.1-1 /spl mu/m) and incorporated into 1-3 THz planar mixer circuits.
Keywords :
barium compounds; bolometers; heterodyne detection; high-temperature superconductors; hot carriers; submillimetre wave detectors; submillimetre wave mixers; superconducting mixers; superconducting thin films; yttrium compounds; 1 to 3 THz; 90 K; YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// ultra-thin film; YBa/sub 2/Cu/sub 3/O/sub 7/; fabrication; heterodyne detection; high temperature superconductor; hot electron bolometer mixer; planar circuit; terahertz radiation; Bolometers; Fabrication; Frequency; High temperature superconductors; Schottky diodes; Space cooling; Space technology; Superconducting devices; Superconducting films; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
