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Published February 5, 2002 | Published
Book Section - Chapter Open

Integrated Focal Plane Arrays for Millimeter-wave Astronomy


We are developing focal plane arrays of bolometric detectors for sub-millimeter and millimeter-wave astrophysics. We propose a flexible array architecture using arrays of slot antennae coupled via low-loss superconducting Nb transmission line to microstrip filters and antenna-coupled bolometers. By combining imaging and filtering functions with transmission line, we are able to realize unique structures such as a multi-band polarimeter and a planar, dispersive spectrometer. Micro-strip bolometers have significantly smaller active volume than standard detectors with extended absorbers, and can realize higher sensitivity and speed of response. The integrated array has natural immunity to stray radiation or spectral leaks, and minimizes the suspended mass operating at 0.1 - 0.3 K. We also discuss future space-borne spectroscopy and polarimetry applications.

Additional Information

© 2002 American Institute of Physics. Issue Date: 5 February 2002. The authors would like to acknowledge support from NASA grant NAG5-10317 and from the JPL DRDF.

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