Bolometer array development at the Max-Planck Institut fur Radioastronomie

被引：162

作者：

Kreysa, E ^{[1
]}

Gemund, HP ^{[1
]}

Gromke, J ^{[1
]}

Haslam, CGT ^{[1
]}

Reichertz, L ^{[1
]}

Haller, EE ^{[1
]}

Beeman, JW ^{[1
]}

Hansen, V ^{[1
]}

Sievers, A ^{[1
]}

Zylka, R ^{[1
]}

机构：

[1] MPIfR, Bonn, Germany

来源：

ADVANCED TECHNOLOGY MMW, RADIO, AND TERAHERTZ TELESCOPES | 1998年 / 3357卷

关键词：

bolometers; absorbers; micromachining;

D O I：

10.1117/12.317367

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Continuum radiometers based on bolometers have a long tradition at the Max-Planck-Institut fur Radioastronomie (MPIfR) in Bonn, Germany. Arrays of bolometers have been under development since the early 90's. A small 7-element system, operating at 300mK, saw first light in 1992, at the IRAM 30m-telescope and has been used successfully by numerous observers at that facility since then. While this array had a conventional "composite" design, it was obvious that larger arrays, especially for higher frequencies, could take advantage of microfabrication technology. The recent MPIfR bolometer arrays employ a hybrid approach. They combine a single-mode horn array with a planar bolometer army on a single crystal Silicon wafer with Silicon-Nitride membranes. With efficient absorbing structures, the bolometers couple to the single mode of the radiation field collected by the horns, without needing integrating cavities. Readout is provided by NTD-Germanium thermistors that are attached to the absorbers. This paper covers the history of this development, the general aspects of the bolometer arrays, including the coupling to the telescope, and the status of work in progress.

引用

页码：319 / 325

页数：7