Method and apparatus for simultaneous measurement of electric field and temperature using an electrooptic semiconductor probe
US6906506B1 · kind B1 · utility
62Cited by
18References
30Claims
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Key dates
| Filing date | Mar 6, 2002 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Mar 29, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/311
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method to simultaneously measure electric and thermal fields with a single probe. Using an electrooptic semiconductor probe, the Pockels effect is employed to measure electric field magnitude and phase, and the effect of photon absorption due to bandtail states in the semiconductor is used to measure temperature. Techniques to scale relative electric-field measurements to absolute units (volts/meter), stabilize electric-field phase drift, and calibrate electric-field data that is corrupted when the probe is used in regions where temperature gradients exist are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.