Sensitive bolometers using high-[ital T][sub [ital c]] superconducting thermometers for wavelengths 20--300 [mu]m

Journal Article · Wed Sep 15 04:00:00 EDT 1993 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.354435· OSTI ID:6273995

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

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1. Department of Physics, University of California and Materials Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)
2. Conductus Inc., Sunnyvale, California 94086 (United States)

Two types of sensitive high-[ital T][sub [ital c]] bolometer have been fabricated on 20-[mu]m-thick sapphire substrates with YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] thin film transition edge thermometers. The sensitivity of both devices is superior to commercially available, room temperature pyroelectric detectors. A 1[times]1 mm bolometer with a radiation absorber of gold black smoke has a noise equivalent power NEP=2.4[times]10[sup [minus]11] W/Hz[sup 1/2] at 10 Hz and has useful sensitivity over wavelengths 20--100 [mu]m. A 3[times]3 mm bolometer with a Bi film radiation absorber has NEP=3.6[times]10[sup [minus]10] W/Hz[sup 1/2] at 10 Hz and has useful sensitivity over wavelengths 100--300 [mu]m. Water vapor transmittance spectra were measured to demonstrate the sensitivity of both devices.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6273995
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 74:6; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BOLOMETERS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTROMAGNETIC RADIATION
FILMS
FREQUENCY RANGE
HIGH-TC SUPERCONDUCTORS
HZ RANGE
INFRARED RADIATION
MEASURING INSTRUMENTS
NOISE
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
THERMOMETERS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES