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arXiv 0801.1270physics.atom-ph
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低噪声小型原子重力仪灵敏度的极限

Limits to the sensitivity of a low noise compact atomic gravimeter

J. Le Gouët, Tanja Mehlstäubler, Jaewan Kim, Sébastien Merlet, Andre Clairon, Arnaud Landragin, Franck Pereira Dos Santos

摘要:

从理论和实验两方面详细分析了原子干涉仪中最相关的相位噪声源。即使是100 ms的短询问时间,我们的冷原子重力仪也能对1 s时的$1.4\times 10^{-8}$ g加速度达到出色的短期灵敏度。这一结果依赖于低相位噪声激光系统、有效的检测方案和良好的振动屏蔽的组合。特别是,我们描述了一个简单而强大的振动补偿技术,这是基于校正的干涉仪信号通过使用由低噪声地震计测量的交流加速度信号。

英文摘要:

A detailed analysis of the most relevant sources of phase noise in an atomic interferometer is carried out, both theoretically and experimentally. Even a short interrogation time of 100 ms allows our cold atom gravimeter to reach an excellent short term sensitivity to acceleration of $1.4\times 10^{-8}$g at 1s. This result relies on the combination of a low phase noise laser system, efficient detection scheme and good shielding from vibrations. In particular, we describe a simple and robust technique of vibration compensation, which is based on correcting the interferometer signal by using the AC acceleration signal measured by a low noise seismometer.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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