Low noise high-temperature superconducting bolometers for infrared imaging

被引：39

作者：

Berkowitz, SJ ^{[1
]}

Hirahara, AS ^{[1
]}

Char, K ^{[1
]}

Grossman, EN ^{[1
]}

机构：

[1] NIST,BOULDER,CO 80303

来源：

APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 14期

关键词：

D O I：

10.1063/1.117174

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High-temperature superconducting bolometric infrared detectors offer the promise of matching the sensitivity of HgCdTe detectors, but with an extended detection range to longer wavelengths (lambda >15 mu m). We fabricated high-temperature superconducting bolometers using an all-epitaxial micromachining technology based upon a YBa2Cu3Ox thin film on a yttria-stabilized zirconia free-standing 50X50 mu m(2) membrane supported on a LaAlO3 substrate. This structure has simultaneously a low thermal conductance and a low heat capacity. Using this technology, we have made array-compatible pixels for infrared camera applications with optical noise equivalent powers as low as 6.3 X 10(-13) W/root Hz at 32 Hz. Over more than 1 octave of frequency range, these bolometers are limited by fundamental (chiefly phonon) noise sources rather than excess him noise. (C) 1996 American Institute of Physics.

引用

页码：2125 / 2127

页数：3

共 7 条

[1]

JOHNSON BR, 1994, P SOC PHOTO-OPT INS, V2267, P24, DOI 10.1117/12.187475

[2] FREESTANDING MICROSTRUCTURES OF YBA2CU3O7-DELTA - A HIGH-TEMPERATURE SUPERCONDUCTING AIR BRIDGE [J].