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US 9,312,871 B2Granted
Gas cell, quantum interference device, atomic oscillator, electronic device, and moving object
AssigneeSeiko Epson Corporation
InventorsHiroyuki Yoshida, Tomohiro Tamura
Life of this patent
Estimating the term…
Abstract
A gas cell includes an internal space in which metal atoms and a buffer gas are sealed. The buffer gas includes a gas mixture including nitrogen gas and argon gas. The mole fraction of the argon gas in the gas mixture is equal to or greater than 15% and equal to or less than 40%.
Claims19
A gas cell comprising:
- a body having a columnar through-hole, a recess and a groove, the columnar through-hole penetrating through the body from a first end to a second end of the body in a first direction, the recess being open to the first end of the body, and the groove interconnecting the columnar through-hole and the recess;
- a pair of windows bonded to the first and second ends of the body;
- an internal space being configured by the columnar through-hole, the recess, the groove and the pair of windows;
- metal atoms which are sealed in the internal space;
- and
- a buffer gas which is sealed in the internal space,
- wherein the buffer gas is a gas mixture including nitrogen gas and argon gas, and
- a mole fraction of the argon gas in the gas mixture is in a range equal to or greater than 15% and equal to or less than 40%.
5 more elements
A gas cell comprising:
- a body having a columnar through-hole, a recess and a groove, the columnar through-hole penetrating through the body from a first end to a second end of the body in a first direction, the recess being open to the first end of the body, and the groove interconnecting the columnar through-hole and the recess;
- a pair of windows bonded to the first and second ends of the body;
- an internal space being configured by the columnar through-hole, the recess, the groove and the pair of windows;
- metal atoms which are sealed in the internal space;
- and
- a buffer gas which is sealed in the internal space, wherein
- a distance between the pair of windows is equal to or less than 10 mm, and
- a width between the first and second ends of the body parallel to the pair of windows is equal to or less than 10 mm.
5 more elements
A gas cell comprising:
- a body having a columnar through-hole, a recess and a groove, the columnar through-hole penetrating through the body from a first end to a second end of the body in a first direction, the recess being open to the first end of the body, and the groove interconnecting the columnar through-hole and the recess;
- a pair of windows bonded to the first and second ends of the body;
- an internal space being configured by the columnar through-hole, the recess, the groove and the pair of windows;
- metal atoms which are sealed in the internal space;
- and
- a buffer gas which is sealed in the internal space,
- wherein the buffer gas is a gas mixture including nitrogen gas and argon gas,
- a mole fraction of the argon gas in the gas mixture is in a range equal to or greater than 15% and equal to or less than 40%,
- a distance between the pair of windows is equal to or less than 10 mm, and
- a width between the first and second ends of the body parallel to the pair of windows is equal to or less than 10 mm.
7 more elements
Dependencies are inferred from the claim text.