A superconducting antenna-coupled hot-spot microbolometer

A. Luukanen; Jukka Pekola

doi:10.1063/1.1579562

A superconducting antenna-coupled hot-spot microbolometer

A. Luukanen, Jukka Pekola

Department of Applied Physics

Research output: Contribution to journal › Article › Scientific › peer-review

85 Citations (Scopus)

59 Downloads (Pure)

Abstract

We report the electrical properties of an antenna-coupled niobium vacuum-bridge bolometer, operated at a temperature of 4.2 K, in which the thermal isolation is maximized by the vacuum gap between the bridge and the underlying silicon substrate. The device is voltage-biased, which results in a formation of a normal state region in the middle of the bridge. The device shows a current responsivity of −1430 A/W and an amplifier limited electrical noise equivalent power of 1.4×10−14 W/Hz⎯⎯⎯⎯⎯√.

Original language	English
Pages (from-to)	3970-3972
Number of pages	3
Journal	Applied Physics Letters
Volume	82
Issue number	22
DOIs	https://doi.org/10.1063/1.1579562
Publication status	Published - 2003
MoE publication type	A1 Journal article-refereed

Keywords

antenna coupling
superconductor
vacuum-bridge bolometer

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10.1063/1.1579562

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abstract = "We report the electrical properties of an antenna-coupled niobium vacuum-bridge bolometer, operated at a temperature of 4.2 K, in which the thermal isolation is maximized by the vacuum gap between the bridge and the underlying silicon substrate. The device is voltage-biased, which results in a formation of a normal state region in the middle of the bridge. The device shows a current responsivity of −1430 A/W and an amplifier limited electrical noise equivalent power of 1.4×10−14 W/Hz⎯⎯⎯⎯⎯√.",

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AB - We report the electrical properties of an antenna-coupled niobium vacuum-bridge bolometer, operated at a temperature of 4.2 K, in which the thermal isolation is maximized by the vacuum gap between the bridge and the underlying silicon substrate. The device is voltage-biased, which results in a formation of a normal state region in the middle of the bridge. The device shows a current responsivity of −1430 A/W and an amplifier limited electrical noise equivalent power of 1.4×10−14 W/Hz⎯⎯⎯⎯⎯√.

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KW - superconductor

KW - vacuum-bridge bolometer

KW - antenna coupling

KW - superconductor

KW - vacuum-bridge bolometer

KW - antenna coupling

KW - superconductor

KW - vacuum-bridge bolometer

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