Method and system for operating an atomic clock using a self-modulated laser with electrical modulation
US8009520B2 · kind B2 · utility
14Cited by
8References
17Claims
0Family size
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Key dates
| Filing date | May 7, 2008 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Dec 20, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04F5/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A polarization gain medium such as an emitting laser diode provides the optical pumping. An atomic vapor cell is positioned in the laser cavity providing spontaneous push-pull optical pumping inside the laser cavity. This causes the laser beam to be modulated at hyperfine-resonance frequency. A clock signal is obtained from electrical modulation across the laser diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.