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William Loh¹, Jules Stuart^2,3, David Reens²

¹Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, MA, USA. William.Loh@ll.mit.edu.

|December 10, 2020

概括

研究人员使用一种新的激光制造了一种便携式光学原子钟. 这种新的时钟显著改善了时间和频率的测量, 超过了传统的微波原子钟,

科学领域:

原子,分子和光学物理学
计量学和测量科学

背景情况:

微波原子钟是时间和频率的传统标准.
虽然光学原子钟的精度更高,但它们又大又对环境因素敏感.
现有的光学时钟需要庞大的真空系统,容易受到振动.

研究的目的:

开发一个便携式光学原子钟的关键部件.
为实地应用而缩小和强化光学原子钟技术.
展示光学时钟的无真空激光稳定技术.

主要方法:

使用刺激的布里卢恩散射激光子系统,可减少腔体积,不需要真空.
使用新型激光系统对88Sr+离子进行了审讯.
开发了一个潜在的便携式光学原子钟架构.

主要成果:

在1秒内达到3.9×10^-14的短期稳定性.
与最先进的微波时钟相比,稳定性有所改善.
呈现了一个有前途的组件为一个便携式光学原子钟.

结论:

开发的刺激布里卢恩散射激光器是便携式光学原子钟的可行组件.
这种进步为GPS等技术的显著改进提供了途径.
在地质测量,暗物质搜索和基本常数变化研究中提供了新的可能性.

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