Tuned optical cavity magnetometer
US7826065B1 · kind B1 · utility
68Cited by
9References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2008 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Jun 3, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An atomic magnetometer is disclosed which utilizes an optical cavity formed from a grating and a mirror, with a vapor cell containing an alkali metal vapor located inside the optical cavity. Lasers are used to magnetically polarize the alkali metal vapor and to probe the vapor and generate a diffracted laser beam which can be used to sense a magnetic field. Electrostatic actuators can be used in the magnetometer for positioning of the mirror, or for modulation thereof. Another optical cavity can also be formed from the mirror and a second grating for sensing, adjusting, or stabilizing the position of the mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.