Chip-scale optomechanical magnetometer
US9897666B2 · kind B2 · utility
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11References
18Claims
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Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Mar 25, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0327
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optomechanical oscillator for measuring a magnetic field may include a fixed substrate, a moveable mass separated from the fixed substrate by a slot, a photonic crystal comprising an optomechanical cavity formed at the slot, and a current source operably coupled to provide current to the photonic crystal. The moveable mass may be moveable responsive to placement of the optomechanical oscillator in a magnetic field based on interaction of the magnetic field and the current. The magnetic field may be measureable based on displacement of the moveable mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.