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 | |
| Publication status | Published - 2003 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- antenna coupling
- superconductor
- vacuum-bridge bolometer