A superconducting antenna-coupled hot-spot microbolometer

A. Luukanen, Jukka Pekola

Research output: Contribution to journalArticleScientificpeer-review

85 Citations (Scopus)
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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 languageEnglish
Pages (from-to)3970-3972
Number of pages3
JournalApplied Physics Letters
Issue number22
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed


  • antenna coupling
  • superconductor
  • vacuum-bridge bolometer

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