Seiko Epson Corporation

Tomohiro Tamura

Koji Chindo

Noriaki Tanaka

Hiroyuki Yoshida

Kimio Nagasaka

Yoshiyuki Maki

Yukihiro Hashi

Teppei Higuchi

Takahiro Kan

An atomic oscillator includes: a light-emitting element; an atom cell that includes a first surface on which light beams from the light-emitting element are incident and a second surface from which the light beams incident on the first surface are emitted and accommodates alkali metal atoms in a gas state; a shield that accommodates the atom cell and has a magnetic shielding property, the shield having an opening; a heat transfer member that is in contact with a portion of the atom cell via an opening of the shield and has a thermal conductivity higher than a thermal conductivity of the atom cell; a temperature control element that is in contact with the heat transfer member and controls a temperature of the atom cell; and a light-receiving element that receives the light beams emitted from the second surface.

Atomic oscillator and frequency signal generation system

An atomic oscillator includes a gas cell encapsulating metal atoms, a coil disposed in a periphery of the gas cell, a laser source adapted to emit excitation light toward the gas cell, a heater adapted to heat the gas cell, and a wiring board adapted to supply the heater with power, and a plus line forming a plus current channel for the heater and provided to the wiring board, and a minus line forming a minus current channel for the heater and provided to the wiring board are disposed close to each other.

Atomic oscillator

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%.

Gas cell, quantum interference device, atomic oscillator, electronic device, and moving object

A quantum interference device includes a wiring board, a second unit including a gas cell in which metal atoms are sealed, a first unit that includes a light emission unit emitting light, which includes a resonance light pair for resonating the metal atoms, toward the metal atoms, and a supporting plate that has a plate shape, supports the first unit and the second unit on one surface side thereof, and is connected to the wiring board on the other surface side thereof. In addition, a second supporting portion supporting the second unit of the supporting plate includes a portion separated from the wiring board.

Quantum interference device, atomic oscillator, electronic apparatus, and moving object

An oscillating device includes an atomic oscillator, an oven controlled crystal oscillator, a correcting unit configured to correct an output signal of the oven controlled crystal oscillator on the basis of an output signal of the atomic oscillator, a housing configured to house the atomic oscillator and the oven controlled crystal oscillator, and a temperature adjusting unit configured to adjust the temperature in the housing to a predetermined temperature.

Growing community of inventors

Suwa, Japan

Tomohiro Tamura