Method and system for operating an atomic clock with...

Details Method and system for operating an atomic clock with... Method and system for operating an atomic clock with...

2006-08-24

2008-10-21

Kinkead, Arnold (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Molecular resonance stabilization

C331S094100, C324S302000, C324S304000

Reexamination Certificate

active

07439814

ABSTRACT:
The present invention relates to a method and system in which multi-coherent resonances of a microwave in which the alkali-metal atoms in the ground state are driven simultaneously by a microwave hyperfine frequency ΩHand a Zeeman frequency ΩZ. The driving influences on the atom can include magnetic fields or by optically pumping light modulated by a Zeeman frequency ΩZor a microwave hyperfine frequency ΩHor by combinations of their harmonics or subharmonics. Multi-coherent resonances permit simultaneous measurement or control of the ambient magnetic field and measurement or control of a hyperfine resonance frequency of alkali-metal atoms. In one embodiment, the hyperfine frequency for a controlled magnetic field can serve as an atomic clock frequency.

REFERENCES:
patent: 6888780 (2005-05-01), Happer et al.
patent: 6919770 (2005-07-01), Happer et al.
patent: 2005/0212607 (2005-09-01), Happer et al.
Bell et al., Physical Review Letters, “Optically Driven Spin Precession”, vol. 6, No. 6, pp. 280-281, (1961).
Miron et al., Physical Review Letters, “Push-Pull Optical Pumping of Pure Superposition States”, vol. 93, No. 16, pp. 160802-1 to 160802-4, (2004).

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