Dissertation/Thesis Abstract

Antenna-coupled Superconducting Bolometers for Observations of the Cosmic Microwave Background Polarization
by Myers, Michael James, Ph.D., University of California, Berkeley, 2010, 127; 3444824
Abstract (Summary)

We describe the development of a novel millimeter-wave cryogenic detector. The device integrates a planar antenna, superconducting transmission line, bandpass filter, and bolometer onto a single silicon wafer. The bolometer uses a superconducting Transition-Edge Sensor (TES) thermistor, which provides substantial advantages over conventional semiconductor bolometers. The detector chip is fabricated using standard micro-fabrication techniques.

This highly-integrated detector architecture is particularly well-suited for use in the de- velopment of polarization-sensitive cryogenic receivers with thousands of pixels. Such receivers are needed to meet the sensitivity requirements of next-generation cosmic microwave background polarization experiments.

The design, fabrication, and testing of prototype array pixels are described. Preliminary considerations for a full array design are also discussed. A set of on-chip millimeter-wave test structures were developed to help understand the performance of our millimeter-wave microstrip circuits. These test structures produce a calibrated transmission measurement for an arbitrary two-port circuit using optical techniques, rather than a network analyzer. Some results of fabricated test structures are presented.

Indexing (document details)
Advisor: Lee, Adrian T.
Commitee: Richards, Paul L., Welch, William J.
School: University of California, Berkeley
Department: Physics
School Location: United States -- California
Source: DAI-B 72/05, Dissertation Abstracts International
Subjects: Astronomy
Keywords: Antenna, Cosmic microwave background, Millimeter-wave, Polarization, Superconducting bolometers, Tes
Publication Number: 3444824
ISBN: 978-1-124-52956-1
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