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Proceedings Paper

Imaging with modular linear arrays of cryogenic Nb microbolometers
Author(s): E. N. Grossman; C. R. Dietlein; J. E. Bjarnason; M. Ramirez; M. Leivo; J. A. Penttila; P. Helisto; A. Luukanen
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Paper Abstract

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.

Paper Details

Date Published: 18 April 2008
PDF: 10 pages
Proc. SPIE 6948, Passive Millimeter-Wave Imaging Technology XI, 694806 (18 April 2008); doi: 10.1117/12.784645
Show Author Affiliations
E. N. Grossman, National Institute of Standards and Technology (United States)
C. R. Dietlein, National Institute of Standards and Technology (United States)
Univ. of Colorado, Boulder (United States)
J. E. Bjarnason, National Institute of Standards and Technology (United States)
M. Ramirez, Univ. of Colorado, Boulder (United States)
M. Leivo, VTT (Finland)
J. A. Penttila, Aivon Oy (Finland)
P. Helisto, VTT (Finland)
A. Luukanen, VTT (Finland)


Published in SPIE Proceedings Vol. 6948:
Passive Millimeter-Wave Imaging Technology XI
Roger Appleby; David A. Wikner, Editor(s)

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