Limits to the sensitivity of a low noise compact atomic gravimeter

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 $1.4\times 10^{-8}$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.

30 pages, 14 figures

References in corpus (8)

• Sensitive Absolute Gravity Gradiometry Using Atom Interferometry
• 6-axis inertial sensor using cold-atom interferometry
• Atom Interferometry tests of the isotropy of post-Newtonian gravity
• Determination of the Newtonian Gravitational Constant Using Atom Interferometry
• Interference-filter-stabilized external-cavity diode lasers
• Transportable laser system for atom interferometry
• Influence of lasers propagation delay on the sensitivity of atom interferometers
• Influence of optical aberrations in an atomic gyroscope

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