Applied Physics B

, Volume 92, Issue 2, pp 133–144

Limits to the sensitivity of a low noise compact atomic gravimeter

  • J. Le Gouët
  • T.E. Mehlstäubler
  • J. Kim
  • S. Merlet
  • A. Clairon
  • A. Landragin
  • F. Pereira Dos Santos
Article

DOI: 10.1007/s00340-008-3088-1

Cite this article as:
Le Gouët, J., Mehlstäubler, T., Kim, J. et al. Appl. Phys. B (2008) 92: 133. doi:10.1007/s00340-008-3088-1

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.

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • J. Le Gouët
    • 1
  • T.E. Mehlstäubler
    • 1
  • J. Kim
    • 1
  • S. Merlet
    • 1
  • A. Clairon
    • 1
  • A. Landragin
    • 1
  • F. Pereira Dos Santos
    • 1
  1. 1.LNE-SYRTE, CNRS UMR 8630, UPMC, Observatoire de ParisParisFrance