Edward J. Wollack

TL;DR: In this paper, the authors used the first 90 GHz receiver as a primary reference and achieved detector temperatures below 50 mK in the 40 GHz instrument for 85% of the initial 1.5 years of operation.

TL;DR: In this article, a smooth-walled feedhorn with cross polarization and reflected power lower than -30 dB across the entire 30% bandwidth has been presented, which is especially useful in applications where a large number of feeds are desired in a planar array format.

TL;DR: In this paper, an optical design methodology for micro-spec is presented, with particular attention given to its two-dimensional dynamic region, where the light of di erent wavelengths is focused on the different detectors, and two pointdesigns with resolving power of 260 and 520 and an RMS phase error less than 0:004 radians were developed for initial demonstration and will be the basis of future instruments with resolving powers up to about 1200.

TL;DR: In this article, the experimental investigation of a broadband far-infrared meta-material absorber is described, which is largely insensitive to the detailed geometry of these elements and is cryogenically compatible with silicon-based micro-machined technologies.