Optimization of temperature characteristics of a transportable 87Rb atomic fountain clock

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2019,（8）
• 页码范围: 1-5
• 页数: 5页
• 语种: 英文
• DOI: 10.3788/COL201917.080201

摘要

A high-performance transportable fountain clock is attractive for use in laboratories with high-precision time-frequency measurement requirements.This Letter reports the improvement of the stability of a transportable rubidium-87 fountain clock because of an optimization of temperature characteristics.This clock integrates its physical packaging,optical benches,microwave frequency synthesizers,and electronic controls onto an easily movable wheeled plate.Two optical benches with a high-vibration resistance are realized in this work.No additional adjustment is required after moving them several times.The Allan deviation of the fountain clock frequency was measured by comparing it with that of the hydrogen maser.The fountain clock got a short-term stability of 2.3 × 10-13 at 1 s and long-term stability on the order of 10-16 at 100,000 s.