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Gold absorbing film for a composite bolometerThe principles governing the design of metal films are reviewed, with attention also given to the choice of metals. A description is then given of the characteristics of a bolometer with a gold absorbing film. It is demonstrated that gold is effective as an absorbing film for a millimeter bolometer operated at 1.5 K. At 1.5 K, gold is significantly better than bismuth since gold has a lower heat capacity for the absorbing film. At 0.3 K, gold and bismuth are both suitable. It is pointed out that at temperatures below 0.3 K, a superconducting absorbing film can have a heat capacity low enough not to dominate the heat capacity of the detector; for this reason, it may give better performance than a nonsuperconducting absorbing film.
Document ID
19840041866
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Dragovan, M.
(Chicago, University Chicago, IL, United States)
Moseley, S. H.
(NASA Goddard Space Flight Center Laboratory for Extraterrestrial Physics, Greenbelt, MD, United States)
Date Acquired
August 12, 2013
Publication Date
March 1, 1984
Publication Information
Publication: Applied Optics
Volume: 23
ISSN: 0003-6935
Subject Category
Instrumentation And Photography
Accession Number
84A24653
Funding Number(s)
CONTRACT_GRANT: NSG-2057
CONTRACT_GRANT: NSF AST-81-17134
Distribution Limits
Public
Copyright
Other

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