Fabrication of an infrared bolometer with a high T sub c superconducting thermometer

Conference · Sat Sep 01 04:00:00 EDT 1990

OSTI ID:6184409

Vergjese, S; Richards, P L ^[1]; Char, K; Sachtjen, S A ^[2]

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1. California Univ., Berkeley, CA (USA). Dept. of Physics Lawrence Berkeley Lab., CA (USA)
2. Conductus, Inc., Sunnyvale, CA (USA)

A sensitive high {Tc} superconducting bolometer has been fabricated on a 20 {mu}m thick sapphire substrate with a YBCO thin film transition edge thermometer. Optical measurements with a He-Ne laser gave a noise equivalent power of 2.4{center dot}10{sup {minus}11} W/Hz{sup 1/2} at 10 Hz and a responsivity of 17 V/W in good agreement with electrical bolometer measurements. Gold black smoke was then deposited on the back side of the assembled bolometer as an absorber. Spectral measurements on a Fourier transform spectrometer show that the bolometer has useful sensitivity from visible wavelengths to beyond {approximately}100 {mu}m. This performance is clearly superior to that of a commercial room temperature pyroelectric detector. Some improvement appears possible. 10 refs., 5 figs.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6184409
• Report Number(s): LBL-28989; CONF-900944--23; ON: DE91005210
• Country of Publication: United States
• Language: English

Related Subjects

426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
440500 -- Thermal Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BARIUM COMPOUNDS
BOLOMETERS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CORUNDUM
DESIGN
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
FABRICATION
FILMS
FREQUENCY DEPENDENCE
HIGH-TC SUPERCONDUCTORS
INFRARED RADIATION
MEASURING INSTRUMENTS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
SAPPHIRE
SUBSTRATES
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMOMETERS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS