Abstract
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 1.4×10-8g at 1 s. 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.
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32.80.Pj; 42.50.Vk; 39.20.+q
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Le Gouët, J., Mehlstäubler, T., Kim, J. et al. Limits to the sensitivity of a low noise compact atomic gravimeter. Appl. Phys. B 92, 133–144 (2008). https://doi.org/10.1007/s00340-008-3088-1
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DOI: https://doi.org/10.1007/s00340-008-3088-1