Measurement of Cs-buffer gas collisional frequency shift using pulsed CPT interrogation

In this paper we presented separate measurements of the temperature coefficients for clock transition in Cs for N₂, Ar and Ne buffer gases. The inversion temperature for Ne has been determined (77°C). For N₂ the inversion temperature is estimated at 157 158°C. We have reduced the uncertainties for linear temperature coefficients for Cs clock transition three buffer gases. The quadratic coefficients γ for N₂ and Ne have been determined for the first time. For Ar buffer gas, the quadratic coefficient γ is much smaller and we have estimated its upper limit.