Magnetometer with optical pumping of a sensitive element with linearly polarised light and multiple-pass in the sensitive element
US11442119B2 · kind B2 · utility
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5References
12Claims
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Key dates
| Filing date | Dec 20, 2019 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Dec 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical pumping magnetometer made with linearly polarised light. The magnetometer comprises a cell filled with an atomic gas and a detector configured to output a signal carrying information about an alignment state of atoms of the atomic gas in the cell. The magnetometer also comprises a collimator arranged to collimate a light beam before it illuminates the cell and a mirror arranged to reflect the collimated light beam after it has passed through the cell such that the collimated light beam makes a multipass through the cell and illuminates the same region of the cell several times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.