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Publication Citation: Imaging with modular linear arrays of cryogenic Nb microbolometers

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Author(s): Erich N. Grossman; Charles Dietlein; Jon E. Bjarnason; Mabel Ramirez; M. Leivo; J. A. Penttila; P. Helisto; A. Luukanen;
Title: Imaging with modular linear arrays of cryogenic Nb microbolometers
Published: March 17, 2008
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.
Conference: SPIE - The International Society for Optical Engineering, Defense & Security Symposium
Proceedings: Proc., SPIE
Volume: Vol. 6948
Pages: pp. 694806-1 - 694806-10
Location: Orlando, FL
Dates: March 17-20, 2008
Keywords: imaging;microbolometer arrays;millimeter-wave;terahertz
Research Areas: Terahertz Technology
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