Ratiometric nuclear magnetic resonance (NMR) gyroscope system
US9778041B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2015 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Apr 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An NMR gyroscope system includes a vapor cell that includes an alkali metal, a first gyromagnetic isotope, and a second gyromagnetic isotope, and a pump laser generates an optical pump beam. A magnetic field generator generates a magnetic field that is substantially aligned with a sensitive axis to cause the first and second gyromagnetic isotopes to counter-precess based on the optical pump beam and the alkali metal. A probe laser provides an optical probe beam through the vapor cell that exits the vapor cell as a detection beam, and a detection system monitors the detection beam and to determine a rotation of the NMR gyroscope system about a sensitive axis based on a modulation of the detection beam in response to precession of the first and second gyromagnetic isotopes and based on a predetermined constant ratio of precession of the first and second gyromagnetic isotopes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.