Title :
Design of high-T/sub c/ superconducting bolometers for a far infrared imaging array
Author :
Verghese, S. ; Richards, P.L. ; Fork, D.K. ; Char, K. ; Geballe, T.H.
Author_Institution :
Dept. of Phys., California Univ., Berkeley, CA, USA
fDate :
3/1/1993 12:00:00 AM
Abstract :
The design of high-T/sub c/ superconducting bolometers for use in a far-infrared imaging array for 30-100- mu m wavelengths is discussed. Measurements of the voltage noise in thin films of YBa/sub 2/Cu/sub 3/O/sub 7- delta / on yttria-stabilized zirconia buffer layers on silicon substrates are used to make performance estimates. It is noted that useful opportunities exist for imaging and spectroscopy with bolometer arrays made on micromachined silicon membranes. A circuit on each pixel which performs some signal integration can improve the sensitivity of large two-dimensional arrays of bolometers which use multiplexed readout amplifiers.<>
Keywords :
barium compounds; bolometers; high-temperature superconductors; infrared detectors; infrared imaging; micromechanical devices; superconducting junction devices; yttrium compounds; 30 to 100 micron; YBa/sub 2/Cu/sub 3/O/sub 7- delta /; ZrO/sub 2/Y/sub 2/O/sub 3/ buffer; design; far infrared imaging array; high-T/sub c/ superconducting bolometers; large two-dimensional arrays; micromachined Si membrane substrates; multiplexed readout amplifiers; performance; sensitivity; thin films; voltage noise; Bolometers; Buffer layers; Noise measurement; Semiconductor thin films; Silicon; Superconducting device noise; Superconducting epitaxial layers; Superconducting thin films; Voltage measurement; Wavelength measurement;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
