Impact of excess low frequency noise (ELFN) in Si:As impurity band conduction (IBC) focal plane arrays for astronomical applications

被引：9

作者：

Arrington, DC ^{[1
]}

Hubbs, JE ^{[1
]}

Gramer, ME ^{[1
]}

Dole, GA ^{[1
]}

机构：

[1] Bell Aerosp & Technol Corp, Albuquerque, NM 87185 USA

来源：

INFRARED DETECTORS AND FOCAL PLANE ARRAYS V | 1998年 / 3379卷

关键词：

infrared focal plane array (IRFPA); detector noise; excess low frequency noise (ELFN); impurity band conduction (IBC) detector; signal-to-noise ratio; very long wavelength;

D O I：

10.1117/12.317603

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Long wavelength, infrared focal plane arrays (IRFPAs) fabricated with arsenic doped silicon (Si:As), impurity band conduction (IBC) detectors are being utilized in astronomical applications. In these systems, long integration times and/or the co-addition of consecutive frames are typically used to increase the signal-to-noise ratio. Some of the IBC detectors used in these IRFPAs have exhibited Excess Low Frequency Noise (ELFN) which limits their performance under some operational conditions. Data are presented on two Si:As IRFPAs which exhibit ELFN. These data illustrate the parametric dependence of ELFN on detector bias, photon irradiance, and integration time. Additionally, noise spectra fi om a single detector with ELFN illustrate the frequency dependence of ELFN at several photon irradiances. Finally, the effectiveness of the co-addition of frames on improving the signal-to-noise ratio when using an IRFPA with ELFN is quantified..

引用

页码：361 / 370

页数：10