Imaging with modular linear arrays of cryogenic Nb microbolometers

Published

March 17, 2008

Author(s)

Erich N. Grossman, Charles Dietlein, Jon E. Bjarnason, Mabel Ramirez, M. Leivo, J. A. Penttila, P. Helisto, A. Luukanen

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.

Proceedings Title

Proc., SPIE

Volume

Vol. 6948

Conference Dates

March 17-20, 2008

Conference Location

Orlando, FL

Conference Title

SPIE - The International Society for Optical Engineering, Defense & Security Symposium

Pub Type

Conferences

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Keywords

imaging, microbolometer arrays, millimeter-wave, terahertz

Citation

Grossman, E. , Dietlein, C. , Bjarnason, J. , Ramirez, M. , Leivo, M. , Penttila, J. , Helisto, P. and Luukanen, A. (2008), Imaging with modular linear arrays of cryogenic Nb microbolometers, Proc., SPIE, Orlando, FL, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32986 (Accessed February 7, 2025)