ATOMIC OSCILLATOR AND FREQUENCY SIGNAL GENERATION SYSTEM

• Main Authors: HASHI YUKIHIRO, NAGASAKA KIMIO, YONEZAWA TAKEMI, MAKI YOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 08.10.2020
• Subjects: AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES; BASIC ELECTRIC ELEMENTS; BASIC ELECTRONIC CIRCUITRY; DEVICES USING STIMULATED EMISSION; ELECTRICITY; HOROLOGY; PHYSICS; TIME-INTERVAL MEASURING

To provide an atomic oscillator capable of enhancing frequency stability, and a frequency signal generation system.SOLUTION: According to the present invention, an atomic oscillator includes an atom cell having wall parts for defining an internal space for storing an alkali metal atom, a light-emitting element for emitting light for exciting the alkali metal atom, and a light detection element for detecting the light transmitting the atom cell. The atom cell has a first part for storing an alkali metal atom of gas to cause the light from a light emission part to transmit along an x axis, a second part for housing a liquid or solid alkali metal atom, and a third part located between the first part and the second part to connect the first part and the second part. In the third part, distance between the two wall parts facing each other along a y axis perpendicular to the x axis decreases from the first part toward the second part along the y axis at a fixed reduction rate.SELECTED DRAWING: Figure 9 【課題】周波数安定性を高めることができる原子発振器および周波数信号生成システムを提供すること。【解決手段】本発明の原子発振器は、アルカリ金属原子が収容される内部空間を規定する壁部を有する原子セルと、前記アルカリ金属原子を励起する光を出射する発光素子と、前記原子セルを透過した前記光を検出する光検出素子と、を含み、前記原子セルは、気体の前記アルカリ金属原子が収容され、前記光出射部からの光がｘ軸に沿って通過する第１部分と、液体または固体のアルカリ金属原子が収容される第２部分と、前記第１部分と前記第２部分との間に位置し、前記第１部分と前記第２部分とを接続する第３部分と、を有し、前記第３部分において、前記ｘ軸と直交するｙ軸に沿って対向する２つの前記壁部の間の距離が、前記ｙ軸に沿って前記第１部分から前記第２部分へ向かって一定の減少率で減少する。【選択図】図９