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US 10,649,409 B2Granted
Atomic oscillator and frequency signal generation system
AssigneeSeiko Epson Corporation
InventorsNobuhito Hayashi, Koji Chindo
Life of this patent
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Abstract
An atomic oscillator includes: a light source; an atom cell containing a gaseous alkali metal atom, and a nitrogen- and argon-containing buffer gas, and through which light from the light source passes; a photodetector that detects light having passed through the atom cell; and a container containing only a mixed gas containing nitrogen and argon, and housing the atom cell.
Claims9
An atomic oscillator comprising:
- a light source;
- an atom cell containing a gaseous alkali metal atom, and a nitrogen- and argon-containing buffer gas, and through which light from the light source passes;
- a photodetector that detects light having passed through the atom cell;
- and
- a container containing only a mixed gas containing nitrogen and argon, and housing the atom cell,
- wherein
- 15.0≤x≤40.0, and
- 0.132x+51.8≤y≤0.132x+86.9,
- where x is the fraction (%) of a partial pressure of the argon in the buffer gas with respect to a total pressure of the buffer gas, and
- y is the fraction (%) of a partial pressure of the argon in the mixed gas with respect to a total pressure of the mixed gas.
7 more elements
A frequency signal generation system comprising an atomic oscillator,
- wherein the atomic oscillator includes:
- a light source;
- an atom cell containing a gaseous alkali metal atom, and a nitrogen- and argon-containing buffer gas, and through which light from the light source passes;
- a photodetector that detects light having passed through the atom cell;
- and
- a container containing only a mixed gas containing nitrogen and argon, and housing the atom cell,
- wherein
- 15.0≤x≤40.0, and
- 0.132x+51.8≤y≤0.132x+86.9,
- where x is the fraction (%) of a partial pressure of the argon in the buffer gas with respect to a total pressure of the buffer gas, and
- y is the fraction (%) of a partial pressure of the argon in the mixed gas with respect to a total pressure of the mixed gas.
8 more elements
Dependencies are inferred from the claim text.