Liquid helium-cooled bolometer wherein the sensitive element and the elements linking the latter to the electrical connections are obtained from the same semiconductor body
US4116063A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1976 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Nov 26, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Bolometer cooled to a very low temperature, wherein the sensitive element has a very low thermal capacity and, for this purpose, a semiconductor crystal extended on two faces by beams made of the same material, but of smaller section, which have been metallized. These metallized beams, wherein the volume of crystal has been reduced to a minimum by their very small section, directly or indirectly provide the thermal link with the cryostat and the electrical link with the measuring circuit making it possible to eliminate all welds using bonding metal on the side of the crystal which forms part of the sensitive element. In a preferred mode of embodiment, the thermal substrate thermally linked to the crystal is a piece of monocrystalline diamond.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.