EVALUATION OF NEW SOLID RUBIDIUM SOURCE USING ATOMIC CLOCK STABILIZATION LOOP

被引：0

作者：

Hara, Motoaki ^{[1
]}

Yano, Yuichiro ^{[1
]}

Toda, Masaya ^{[2
]}

Ono, Takahito ^{[2
]}

Ido, Tetsuya ^{[1
]}

机构：

[1] Natl Inst Informat & Commun Technol, Tokyo, Japan

[2] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi, Japan

来源：

2021 21ST INTERNATIONAL CONFERENCE ON SOLID-STATE SENSORS, ACTUATORS AND MICROSYSTEMS (TRANSDUCERS) | 2021年

关键词：

Rubidium azide; atomic clock; gas cell; frequency stability; VAPOR CELLS;

D O I：

10.1109/TRANSDUCERS50396.2021.9495382

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We synthesized and evaluated rubidium azide as a new solid alkali metal source for microfabricated atomic clocks. A MEMS-based gas cell was filled with Rb as the alkali metal source for activation and a buffer gas (N-2 or Ar), and the frequency stability was evaluated by incorporating the cell into a feedback loop of the atomic clock. The pressure drift in the gas cell degrades the long-term frequency stability. It is mainly induced by physical absorption on the residue after the activation, but our source is chemically stable and produces no residue in the activation process. Consequently, we successfully confirmed a significant improvement of the long-term frequency stability compared with that of a conventional alkali metal source.

引用

页码：1158 / 1161

页数：4

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