使用不和蒸汽电池的高性能分子光学参考
Zhenqi Zhang1, Wen You1, Xingyue Liu1
1National Precise Gravity Measurement Facility and MOE Key Laboratory of Fundamental Physical Quantities Measurement, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
The Review of scientific instruments
|June 13, 2024
概括
这项研究使用分子 (I2) 和调制转移光谱学提供了一个稳定的光学频率参考. 一个不和蒸汽电池使一个紧的,室温激光具有优良的长期频率不稳定性.
科学领域:
- 原子,分子和光学物理学
- 激光光谱学 激光光谱学
- 计量学 计量学 计量学
背景情况:
- 光学频率参考对于精密测量和先进技术至关重要.
- 分子 (I2) 光谱为频率稳定提供了一套丰富的超精度过渡.
- 现有的稳定激光器通常需要复杂的温度控制或和细胞.
研究的目的:
- 开发基于分子的高性能,紧,稳定的光学频率参考.
- 为了研究使用不和蒸汽电池用于长期频率稳定的可行性.
- 为了达到与稳定激光器报告的最佳结果相比的频率不稳定性.
主要方法:
- 利用调制转移光谱 (MTS) 进行频率稳定.
- 设计并使用在室温下运行的不和分子 (I2) 蒸汽电池.
- 开发了一个紧的,频率稳定激光系统,引用R ((56) 32-0:a1超精度过渡的I2.
主要成果:
- 在1秒内证明了1.4 × 10−14的分数频率不稳定性.
- 在104秒内达到1.7 × 10−15的分数频率不稳定性.
- 在104秒的性能可与之前报告的最好的稳定激光器相美.
结论:
- 一个不和的分子 (I2) 蒸汽电池是开发长期,稳定的光学频率参考的可行方法.
- 没有主动温度稳定的室温操作简化了系统设计.
- 这项工作为更容易获得和更强大的光学时钟和频率标准铺平了道路.
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