Atomic Physics

The European Physical Journal D

, Volume 44, Issue 3, pp 419-425

First online:

Influence of lasers propagation delay on the sensitivity of atom interferometers

  • J. Le GouëtAffiliated withLNE-SYRTE, Observatoire de Paris, LNE, CNRS Email author 
  • , P. CheinetAffiliated withLNE-SYRTE, Observatoire de Paris, LNE, CNRS
  • , J. KimAffiliated withLNE-SYRTE, Observatoire de Paris, LNE, CNRS
  • , D. HollevilleAffiliated withLNE-SYRTE, Observatoire de Paris, LNE, CNRS
  • , A. ClaironAffiliated withLNE-SYRTE, Observatoire de Paris, LNE, CNRS
  • , A. LandraginAffiliated withLNE-SYRTE, Observatoire de Paris, LNE, CNRS
  • , F. Pereira Dos SantosAffiliated withLNE-SYRTE, Observatoire de Paris, LNE, CNRS

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Abstract.

In atom interferometers based on two photon transitions, the delay induced by the difference of the laser beams paths makes the interferometer sensitive to the fluctuations of the frequency of the lasers. We first study, in the general case, how the laser frequency noise affects the performance of the interferometer measurement. Our calculations are compared with the measurements performed on our cold atom gravimeter based on stimulated Raman transitions. We finally extend this study to the case of cold atom gradiometers.

PACS.

39.20.+q Atom interferometry techniques 32.80.Pj Optical cooling of atoms; trapping 06.20.-f Metrology