A DC-COUPLED, HIGH-SENSITIVITY BOLOMETRIC DETECTOR SYSTEM FOR THE INFRARED TELESCOPE IN SPACE

被引：8

作者：

DEVLIN, M ^{[1
]}

LANGE, AE ^{[1
]}

WILBANKS, T ^{[1
]}

SATO, S ^{[1
]}

机构：

[1] NAGOYA UNIV,DEPT PHYS,NAGOYA 46401,JAPAN

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1993年 / 40卷 / 02期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

Airborne telescopes - Infrared detectors - Radiation detectors;

D O I：

10.1109/23.212334

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report the performance of an ac bridge readout system that has been developed for use on the Infrared Telescope in Space which is scheduled for launch in 1994. The ac bridge readout provides excellent dc stability enabling observing strategies well-suited to space-borne observations. The ability to modulate the optical signal slowly allows the use of new, highly sensitive, long time-constant bolometers. At 300 mK, the bolometers have an electrical noise equivalent power of 3 x 10(-17) W/square-root Hz. The total noise of the differential signal, including amplifier noise, is less than 8 x 10(-17) W/square-root Hz at frequencies as low as 35 mHz.

引用

页码：162 / 165

页数：4

共 12 条

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