Imaging with modular linear arrays of cryogenic Nb microbolometers

被引：6

作者：

Grossman, E. N. ^{[1
]}

Dietlein, C. R. ^{[1
,2
]}

Bjarnason, J. E. ^{[1
]}

Ramirez, M. ^{[2
]}

Leivo, M. ^{[3
]}

Penttila, J. A. ^{[5
]}

Helisto, P. ^{[3
]}

Luukanen, A. ^{[4
]}

机构：

[1] NIST, Div Optoelect, 325 Broadway, Boulder, CO 80305 USA

[2] Univ Colorado, Dept Elect Engn, Boulder, CO 80309 USA

[3] VTT Techn Res Ctr Finland, Espoo, Finland

[4] VTT, Millimeter Wave Lab Finland, Espoo, Finland

[5] Avivon Oy, Espoo, Finland

来源：

PASSIVE MILLIMETER-WAVE IMAGING TECHNOLOGY XI | 2008年 / 6948卷

关键词：

microbolometer; terahertz; millimeter-wave; imaging;

D O I：

10.1117/12.784645

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present ultrawideband imagery obtained with modular, 8-element, superconducting Nb microbolometer arrays. Conically scanned images are presented and compared with raster-scanned images obtained on the same arrays and from similar NbN arrays at VTT. Statistical data on detector non-uniformity, and methods for mitigating and compensating it are described. Low-noise readout is accomplished with room-temperature electronics using the transimpedance scheme of Pentilla et al. Characterization of spatial resolution, noise-equivalent temperature difference, and spectral response is done using metrology tools - standard targets, mm-wave blackbodies, and variable filters - that have been developed at NIST for this purpose.

引用

页数：10

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