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Electrical and optical properties of a bolometer with a suspended absorber and tunneling-current thermometers

Abstract:

We have developed a bolometer with a suspended normal-metal absorber connected to superconducting leads via tunneling barriers. Such an absorber has reduced heat losses to the substrate, which greatly increases the responsivity of the bolometer to over 109 V/W at 75 mK when measured by dc Joule heating of the absorber. For high-frequency experiments, the bolometers have been integrated in planar twin-slot and log-periodic antennas. At 300 GHz and 100 mK, the bolometer demonstrates the voltage...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1063/1.4986463

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
More from this funder
Name:
Swedish Research Council
Grant:
621-2014-5468
More from this funder
Name:
Swedish Foundation for International Cooperation in Research and Higher Education
Grant:
IG2010-14
Publisher:
AIP Publishing
Journal:
Applied Physics Letters More from this journal
Volume:
110
Issue:
24
Pages:
242601
Publication date:
2017-06-15
Acceptance date:
2017-05-31
DOI:
EISSN:
1077-3118
ISSN:
0003-6951
Pubs id:
pubs:700635
UUID:
uuid:c8427346-86b3-4440-9413-a722dca10324
Local pid:
pubs:700635
Source identifiers:
700635
Deposit date:
2017-06-15

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