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US 2010/0148879 A1Published application
Atomic frequency acquiring apparatus and atomic clock
AssigneeSeiko Epson Corporation
InventorTomoko KOYAMA
Life of this patent
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Abstract
An atomic frequency acquisition apparatus includes: a cell enclosing atomic gas therein; a laser light source that oscillates a laser light that enters the cell and excites the atomic gas; and a photodetecting section that detects the laser light that has passed through the cell, wherein the cell has at least a laser light reflection section inside thereof.
Claims8
An atomic frequency acquisition apparatus comprising:
- a light refracting structure;
- the light refracting structure including a cavity portion and a light refracting portion having a first area and a second area, the cavity portion being positioned between the first and second areas of the light refracting portion, the cavity portion storing an atom gas;
- the light emitting element being located outside the cavity portion, the light emitting element emitting a light in a primary direction toward the light refracting portion, the first area of the light refracting portion refracting the light in a first refracting direction that is perpendicular to the primary direction directly toward the second area of the light refracting portion so that the light passes through the atom gas and excites atoms in the cavity portion while passing through the cavity portion, the second area of the light refracting portion refracting the light in a second refracting direction that is opposite the primary direction;
- and
- a first light detecting element, the first light detecting element being located outside the cavity portion, the first light detecting element receiving the light that is refracted by the light refracting portion in the second refracting direction.
2 more elements
Dependencies are inferred from the claim text.