Low power reduction of biases in a micro primary frequency standard
US9077354B2 · kind B2 · utility
16Cited by
17References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 5, 2013 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Oct 17, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04F5/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for reducing or eliminating clock bias in an atomic clock is provided. The method comprises cooling a population of atoms collected in the atomic clock using a laser locked at a predetermined frequency, turning off the laser, performing atomic clock spectroscopy, turning on the laser after the atomic clock spectroscopy, and relocking the frequency of the laser to an external reference cell. The population of atoms that are in each of two ground hyperfine levels is then probed using laser light that is on or near-resonant with a selected atomic transition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.