Terahertz detector
US7709799B2 · kind B2 · utility
3Cited by
0References
6Claims
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Key dates
| Filing date | May 18, 2006 |
| Grant date | May 4, 2010 |
| Priority date | — |
| Expiry date | Sep 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detector for electromagnetic radiation in the range 80 GHz to 4 THz comprises a laser light source (115) an optical modulator (13) arranged to modulate light from the laser light source (11) and a filter system (17) for selecting a defined range of frequencies of the modulated light. The optical modulator is an electroabsorption modulator (13) with an antenna (15) which is sensitive to electromagnetic radiation in the range 80 GHz to 4 THz. The signal received by the antenna (15) modulates the electric field across the electroabsorption modulator (13), whereby to modulate the light from the laser light source (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.