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Proceedings Paper

A dual-polarized multichroic antenna-coupled TES bolometer for terrestrial CMB Polarimetry
Author(s): Roger O'Brient; Peter Ade; Kam Arnold; Jennifer Edwards; Greg Engargiola; William Holzapfel; Adrian T. Lee; Xiao Fan Meng; Michael Myers; Erin Quealy; Gabriel Rebeiz; Paul Richards; Aritoki Suzuki
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Paper Abstract

We are developing dual-polarized multi-channel antenna-coupled Transition Edge Sensor (TES) Bolometers for Cosmic Microwave Background (CMB) Polarimetry in terrestrial experiments. Each pixel of the array couples incident power into the lithographed microstrip circuits with a dual-polarized broadband planar sinuous antenna who's gain is increased with a contacting extended hemispherical lens. Microstrip filter manifolds partition the two-octave bandwidth into narrow channels before terminating at separate TES bolometers. We describe the design methodology and fabrication methods used, and also the results of optical tests that show high optical throughput in properly located bands, as well as high cross-polarization rejection. We have explored two antenna feeding schemes that result in different quality beams and we comment on the relative merits of each. Finally, we quantify the increases in mapping speed that an array of our multichroic pixels might realize over traditional monochromatic pixels.

Paper Details

Date Published: 15 July 2010
PDF: 10 pages
Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 77410J (15 July 2010); doi: 10.1117/12.857801
Show Author Affiliations
Roger O'Brient, Univ. of California, Berkeley (United States)
Peter Ade, Cardiff Univ. (United States)
Kam Arnold, Univ. of California, Berkeley (United States)
Jennifer Edwards, Univ. of California, San Diego (United States)
Greg Engargiola, Univ. of California, Berkeley (United States)
William Holzapfel, Univ. of California, Berkeley (United States)
Adrian T. Lee, Univ. of California, Berkeley (United States)
Space Sciences Lab. (United States)
Xiao Fan Meng, Univ. of California, Berkeley (United States)
Michael Myers, Univ. of California, Berkeley (United States)
Erin Quealy, Univ. of California, Berkeley (United States)
Gabriel Rebeiz, Univ. of California, San Diego (United States)
Paul Richards, Univ. of California, Berkeley (United States)
Aritoki Suzuki, Univ. of California, Berkeley (United States)


Published in SPIE Proceedings Vol. 7741:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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