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Parameter Comparison for Low-Noise MoAu TES BolometersWe describe a comparative investigation of the parameters of MoAu-bilayer Transition Edge Sensor (TES) bolometers designed for infrared detectors. A set of devices with variations in geometry were fabricated at the NASA/GSFC detector development facility. These detectors have different bilayer aspect ratios (providing differing normal state resistances and current densities), and have varieties of normal metal regions to study the effects of geometry on noise. These normal metal regions are oriented either parallel to or transverse to the direction of current flow, or both. The lowest noise detectors are found to have normal metal regions oriented transversely. For about a dozen different devices, we have measured a large set of parameters by means of a suite of tests. These include complex impedance measurements to derive time constants; IV curves to determine resistance and power; thermal conductance measurements; noise measurements as a function of device resistance; and &rect resistance vs. temperature measurements .
Document ID
20040012774
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Benford, D. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Moseley, S. H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Staguhn, J. G. (Science Systems and Applications, Inc. Greenbelt, MD, United States)
Allen, C. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chervenak, J. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stevenson, T. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hsieh, W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Mechanical Engineering
Meeting Information
Meeting: Low Temperature Detector Workshop
Location: Genoa
Country: Italy
Start Date: July 7, 2003
End Date: July 11, 2003
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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