کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1785207 | 1023306 | 2007 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A low noise 2Â ÃÂ 16 Ge:Sb focal-plane array: Paving the way for large format FPAs for far IR astronomy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک اتمی و مولکولی و اپتیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Future astronomical instruments call for large format and high sensitivity far infrared focal-plane arrays to meet their science objectives. Arrays as large as 128Â ÃÂ 128 with sensitivities equal to or better than 10â18Â W/âHz are set as targets for the far IR instruments to be developed within the next 10 years. These seemingly modest goals present a not-so-modest quantum leap for far IR detector technology whose progress is hampered by a number of complexities; chief among them the development of low noise readouts operating at deep cryogenic temperatures and a viable hybridization scheme suitable for far IR detectors. In an effort to incrementally develop large-format photoconductor arrays, we have fabricated a 2Â ÃÂ 16 Ge:Sb array using the SBRC190 readout - a cryogenic 1Â ÃÂ 32 CTIA readout multiplexer initially developed for SOFIA's AIRES instrument. In this paper we report the results of the extensive parametric tests performed on this array showing an impressive noise performance of 2.2Â ÃÂ 10â18Â W/âHz and a DQE of 0.41 despite some design limitations. With such an encouraging performance, this prototype array will serve as a platform for our future developmental effort.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Infrared Physics & Technology - Volume 51, Issue 2, October 2007, Pages 102-112
Journal: Infrared Physics & Technology - Volume 51, Issue 2, October 2007, Pages 102-112
نویسندگان
Jam Farhoomand, David Sisson, Jeff Beeman,