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Updated: Jan 16, 2026

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Fabrication and Testing of Photonic Thermometers
Published on: October 24, 2018
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通过增强的热环境控制,改进微型原子钟的长期稳定性
Emily Gokie1, Jon Omaraie1, Thejesh N Bandi1,2
1Quantime Lab, Department of Physics and Astronomy, The University of Alabama, Tuscaloosa, AL 35487, USA.
Sensors (Basel, Switzerland)
|September 27, 2025
概括
这项研究使用外部热控制来增强微型原子钟 (MAC),提高稳定性五倍. 这一进步对于需要高性能,紧的计时解决方案的应用至关重要.
科学领域:
- 原子物理 原子物理
- 精确的计时 精确的计时
- 航空航天工程 航空航天工程
背景情况:
- 紧的原子钟优先考虑降低尺寸,重量和功率 (SWaP),往往会损害稳定性.
- 商业和军事应用需要提高稳定性,超出目前的芯片级原子钟 (CSAC) 和微型原子钟 (MAC) 标准.
- 太空级,高性能时钟对于小型卫星任务至关重要,可实现交替PNT和月球PNT.
研究的目的:
- 改善微型原子钟 (MAC) 的中长期稳定性.
- 增强MAC作为小型卫星任务和地面应用的机载钟的候选人.
- 通过使用外部热控制方法来证明显著的性能改善.
主要方法:
- 利用外部热控制技术,应用于微型原子钟 (MAC).
- 在长时间的平均化间隔 (τ>104秒) 上评估时钟稳定性性能,长达4天.
- 性能与现有的性能最好的微型原子钟标准进行了比较.
主要成果:
- 为MAC实现了至少五倍的稳定性改善.
- 证明了 σy = 4.2 × 10-13 的优越稳定性,用于平均时间间隔大于 104秒.
- 验证了外部热控制对提高原子钟性能的有效性.
结论:
- 外部热控制显著提高了微型原子钟 (MAC) 的稳定性.
- 改进的MAC性能增强了其适用于要求高的应用,包括太空任务的适用性.
- 这项工作为开发下一代高稳定性紧型计时器件提供了途径.
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