在中国空间站上的光学格子时钟的光学系统
Jian Xia1,2, Wenhai Wang3, Guodong Zhao1
1National Time Service Center, Chinese Academy of Sciences, Xi'an 710600, China.
The Review of scientific instruments
|September 8, 2025
概括
一个用于-87原子的紧光学晶格时钟在中国空间站上成功演示. 这个系统这个系统这个系统
科学领域:
- 原子,分子和光学物理学
- 太空科学与技术 太空科学与技术
- 计量学 计量学 计量学
背景情况:
- 光学格子时钟为计时和基础物理研究提供了前所未有的精度.
- 由于恶劣的环境条件和尺寸限制,在太空中部署这些敏感仪器存在重大工程挑战.
- 以前的基于太空的原子钟主要利用微波过渡,限制了可实现的精度.
研究的目的:
- 设计,建造和演示适用于太空部署的-87 (87Sr) 光学晶格时钟的紧光学系统.
- 通过严格的资格测试和轨道运行来验证系统的稳定性和功能.
- 推进在太空中运行的光学时钟的发展,以加强科学探索和应用.
主要方法:
- 开发一个垂直堆叠的,紧的光学系统,体积为0.11 m3,质量为53.6 kg.
- 严格的热和振动合格测试以确保太空准备.
- 在轨道上实现自动化多阶段激光稳定和87Sr原子的蓝色磁光陷.
主要成果:
- 光学系统成功通过了所有发射前合格测试.
- 该系统在中国空间站上发射后仍然完全正常运行.
- 自动激光稳定和原子捕获功能在轨道上成功演示.
结论:
- 紧的87Sr光学格子时钟系统适合太空部署,证明了对发射和太空环境的弹性.
- 成功的轨道示范代表了在运行基于太空的光学时钟方面取得的重大进展.
- 这项技术为未来在太空中进行高精度测量和基本物理实验铺平了道路.
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