Method and apparatus for reduction of non-adaptive signals in photo-EMF sensors
US7701027B1 · kind B1 · utility
1Cited by
4References
22Claims
0Family size
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Key dates
| Filing date | Mar 3, 2006 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Jul 2, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for a photoinduced electromotive force sensor. The sensor has an active substrate formed of a semi-insulating photoconductor with sufficient carrier trap density to form an effective charge grating and pairs of electrodes disposed on the active substrate, where the sensor is configured to reduce the photovoltaic effect caused by the incident light in the vicinity of the electrodes. The shape or composition of the electrodes may be selected to reduce the photovoltaic effect or the electrodes may be disposed on the substrate to average out the photovoltaic effect arising from each one of the electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.