IP Library Granted Patent US 10,642,226
Granted Patent B2
US 10,642,226 · App. 16/295,330 · Granted May 5, 2020

Atomic oscillator and frequency signal generation system

Inventors: Nobuhito Hayashi (Chino, JP); Koji Chindo (Chino, JP)
Assignee: Seiko Epson Corporation
G04F5/14G04F5/145H03B17/00H03L1/04H03L7/26
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Quick Facts
Patent No.
US 10,642,226
App. No.
16/295,330
Granted
May 5, 2020
Kind
B2
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 nitrogen gas and housing the atom cell. The container has a first surface, a second surface, a third surface, a fourth surface, a fifth surface, and a sixth surface. The first surface has a first through hole. At least one of the second surface, the third surface, the fourth surface, the fifth surface, and the sixth surface has a second through hole.

Claims (46)

1. 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 nitrogen gas and housing the atom cell, the container having a first surface, a second surface, a third surface, a fourth surface, a fifth surface, and a sixth surface,

the first surface has a first through hole,

at least one of the second surface, the third surface, the fourth surface, the fifth surface, and the sixth surface has a second through hole.

2. The atomic oscillator according to claim 1 , wherein:

the first through hole is a hole for supplying the nitrogen gas,

the light source and the atom cell are disposed on the same side of a first imaginary plane as the first through hole, and

the first imaginary plane is a plane that passes through a center of the container, and is parallel to the first surface.

3. The atomic oscillator according to claim 2 , wherein the second through hole is positioned on the opposite side of the first imaginary plane from the first through hole.

4. The atomic oscillator according to claim 3 , wherein:

the second through hole is positioned on the opposite side of a second imaginary plane from the first through hole, and

the second imaginary plane is a plane that passes through the center of the container, and is perpendicular to the first surface.

5. The atomic oscillator according to claim 4 , wherein:

the third surface joins the first surface, and

the third surface has the second through hole.

6. 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 argon gas and housing the atom cell, the container having a first surface, a second surface, a third surface, a fourth surface, a fifth surface, and a sixth surface,

the first surface has a first through hole, and

at least one of the second surface, the third surface, the fourth surface, the fifth surface, and the sixth surface has a second through hole.

7. The atomic oscillator according to claim 6 , wherein:

the first through hole is a hole for supplying the argon gas, and

the light source and the atom cell are disposed on the same side of a first imaginary plane as the first through hole, and

the first imaginary plane is a plane that passes through a center of the container, and is parallel to the first surface.

8. The atomic oscillator according to claim 7 , wherein the second through hole is disposed on the opposite side of the first imaginary plane from the first through hole.

9. The atomic oscillator according to claim 8 , wherein:

the second through hole is positioned on the opposite side of a second imaginary plane from the first through hole, and

the second imaginary plane is a plane that passes through the center of the container, and is perpendicular to the first surface.

10. The atomic oscillator according to claim 9 , wherein:

the third surface joins the first surface, and

the third surface has the second through hole.

11. 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 either nitrogen gas or argon gas and housing the atom cell,

the container has a first surface, a second surface, a third surface, a fourth surface, a fifth surface, and a sixth surface,

the first surface has a first through hole,

at least one of the second surface, the third surface, the fourth surface, the fifth surface, and the sixth surface has a second through hole.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 23, 2022
From: SEIKO EPSON CORPORATION
To: MICROCHIP TECHNOLOGY INCORPORATED
Reel/Frame 061301/0770 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 7, 2019
From: HAYASHI, NOBUHITO; CHINDO, KOJI
To: SEIKO EPSON CORPORATION
Reel/Frame 048529/0833 →