Bispectral electromagnetic wave detector
US6157020A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1997 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Dec 4, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to a bispectral electromagnetic wave detector including at least one first and one second overlaid plane active detector elements separated by a common layer, said first and second detector elements being sensitive to the different wavelengths; a first means of connection connected in common to said first and second detector elements, a second means of connection connected to said first detector element, and a third means of connection connected to said second detector element; means for applying successively a control voltage to each means of connection; and means connected to said first means of connection to detect a photoconduction current each time a control voltage is applied. The invention is used in applications requiring detection of electromagnetic waves in two bands of different wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.