Effect of atomic diffusion on the Raman–Ramsey coherent population trapping resonances

  title={Effect of atomic diffusion on the Raman–Ramsey coherent population trapping resonances},
  author={Elena Kuchina and Eugeniy E. Mikhailov and Irina Novikova and Thomas Nelson Community College and VA Hampton and Dep. of Physics and College of WilliamMary and Williamsburg and Virg{\'i}nia},
  journal={Journal of The Optical Society of America B-optical Physics},
We experimentally investigated the characteristics of two-photon transmission resonances in Rb vapor cells with different amounts of buffer gas under the conditions of steady-state coherent population trapping (CPT) and a pulsed Raman–Ramsey (RR) CPT interrogation scheme. We particularly focused on the influence of the Rb atoms diffusing in and out of the laser beam. We showed that this effect modifies the shape of both CPT and RR resonances as well as their projected performance for CPT clock… 
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