公开(公告)号：US20200280319A1

公开(公告)日：2020-09-03

申请号：US16802701

申请日：2020-02-27

Applicant: Seiko Epson Corporation

Inventor： Yasunori ONISHI ,  Koji CHINDO ,  Nobuhito HAYASHI

IPC: H03L7/26 ,  H03L7/02 ,  H01S5/0687

Abstract: An atomic oscillator includes: an atom cell in which alkali metal atoms are accommodated; a light-emitting element that emits light beams for exciting the alkali metal atoms toward the atom cell; a shield that includes a first member, a second member, and a high thermal resistance portion and accommodates the atom cell, the first member and the second member being members having a magnetic shielding property, and the high thermal resistance portion being provided between the first member and the second member and having a thermal resistance higher than thermal resistances of the first member and the second member; a temperature control element that controls a temperature of the first member; a heater that is thermally coupled to the second member; and a light-receiving element that receives light beams passing through the atom cell.

公开(公告)号：US20190278231A1

公开(公告)日：2019-09-12

申请号：US16295330

申请日：2019-03-07

Applicant: Seiko Epson Corporation

Inventor： Nobuhito HAYASHI ,  Koji CHINDO

IPC: G04F5/14 ,  H03L7/26 ,  H03L1/04 ,  H03B1/04

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.

公开(公告)号：US20170244419A1

公开(公告)日：2017-08-24

申请号：US15420884

申请日：2017-01-31

Applicant: SEIKO EPSON CORPORATION

Inventor： Nobuhito HAYASHI ,  Takuya MIYAKAWA ,  Naoki ISHIHARA ,  Yoshiyuki MAKI

IPC: H03L7/26 ,  G04F5/14

CPC classification number: H03L7/26 ,  G04F5/145

Abstract: An atomic cell is filled with an alkali metal therein and includes an inner wall which is formed from a material containing a compound having a polar group, a first coating layer which coats the inner wall and is formed from a first molecule having a nonpolar group and a functional group that undergoes an elimination reaction with the polar group, and a second coating layer which coats the first coating layer and is formed from a nonpolar second molecule, wherein the second molecule is polypropylene, polyethylene, or polymethylpentene.

公开(公告)号：US20170054446A1

公开(公告)日：2017-02-23

申请号：US15236714

申请日：2016-08-15

Applicant: Seiko Epson Corporation

Inventor： Nobuhito HAYASHI ,  Yoshiyuki MAKI

IPC: H03L7/26

CPC classification number: H03L7/26 ,  G02F1/0126 ,  G04F5/14 ,  G04F5/145 ,  H03B17/00

Abstract: An atomic oscillator includes an atom cell having an internal space in which alkali metal is encapsulated, a first light source section for making a resonance light pair, which is circularly polarized in the same direction as each other and resonates the alkali metal, enter the internal space using light from a first light source, a second light source for making adjustment light, which is circularly polarized in a rotational direction opposite to the direction of the resonance light pair and resonates the alkali metal, enter the internal space from the same side as the resonance light pair using light from a second light source, and an aperture member disposed between the internal space, and the first light source and the second light source.

Abstract translation: 原子振荡器包括具有内部空间的原子单元，其中碱金属被封装，用于制造谐振光对的第一光源部分在彼此相同的方向上被圆偏振并且使碱金属共振，进入内部 使用来自第一光源的光的空间，用于调节光的第二光源，其在与谐振光对的方向相反的旋转方向上被圆偏振并使碱金属谐振，从与第一光源相同的一侧进入内部空间， 使用来自第二光源的光的共振灯对以及设置在内部空间与第一光源和第二光源之间的孔部件。

公开(公告)号：US20160105150A1

公开(公告)日：2016-04-14

申请号：US14881475

申请日：2015-10-13

Applicant: Seiko Epson Corporation

Inventor： Nobuhito HAYASHI ,  Yoshiyuki MAKI

IPC: H03B17/00

CPC classification number: H03L7/26 ,  G04F5/14 ,  G04F5/145 ,  H03B17/00 ,  H03L1/04

Abstract: An atomic oscillator includes an atom cell, a first light source device, a second light source device, and a reception section. The atom cell is filled with alkali metal. The first light source device emits a light beam that includes a resonance light beam pair configured to be circularly polarized with each other in the same direction and configured to cause the alkali metal to resonate. The second light source device emits a light beam that includes adjustment light beam configured to be circularly polarized in a reverse direction to the resonance light beam pair. The reception device receives the resonance light beam pair that pass through the atom cell. The adjustment light beam may include the resonance light beam that causes the alkali metal to resonate. In addition, the resonance light beam pair may be a line and the adjustment light beam is a line.

Abstract translation: 原子振荡器包括原子单元，第一光源装置，第二光源装置和接收部。 原子池充满碱金属。 第一光源装置发射包括构造为在相同方向上彼此圆偏振的共振光束对的光束，并且被配置为使碱金属发生共振。 第二光源装置发射包括调整光束的光束，该调整光束被配置为在与谐振光束对相反的方向上被圆偏振。 接收装置接收通过原子单元的共振光束对。 调整光束可以包括使碱金属共振的共振光束。 此外，谐振光束对可以是线，调整光束是线。

公开(公告)号：US20150091659A1

公开(公告)日：2015-04-02

申请号：US14489959

申请日：2014-09-18

Applicant: Seiko Epson Corporation

Inventor： Satoshi KUBO ,  Hiroyuki YOSHIDA ,  Nobuhito HAYASHI ,  Naoki ISHIHARA ,  Noriaki TANAKA

IPC: H03B28/00 ,  H03L7/26

CPC classification number: H03L7/26 ,  G04F5/145

Abstract: An atomic oscillator includes a gas cell, a semiconductor laser, and a frequency modulation signal generator generating a frequency modulation signal causing the semiconductor laser to generate frequency-modulated light including a first-order sideband light pair causing an electromagnetically induced transparency phenomenon in metal atoms. When a modulation level of frequency modulation changes from low to high, a modulation level at a time when the first-order sideband light is maximized for the first time is represented as m1, a modulation level at a time when intensity of light with a center frequency becomes equal to or higher than intensity of the first-order sideband light for the first time after decreasing to be lower than the intensity of the first-order sideband light for the first time is represented as m2, and intensity of the frequency modulation signal is set such that the modulation level is higher than m1 and lower than m2.

Abstract translation: 原子振荡器包括气体单元，半导体激光器和产生调制信号的频率调制信号发生器，其使得半导体激光器产生包括在金属原子中引起电磁感应透明度现象的一阶边带光对的调频光 。 当频率调制的调制电平从低变为高时，一次侧带光第一次最大化时的调制电平被表示为m1，即当具有中心的光强度时的调制电平 频率变得等于或高于一级侧带光的强度，其降低之后的第一次低于一次侧带光的强度首次被表示为m2，频率调制信号的强度 调制度高于m1，低于m2。