Performances and progress of a compact pulsed CPT Cs clock

We report on the development of a compact Cs cell CPT frequency standard operating in the Dicke regime. Combining a double Lambda scheme and a Ramsey interrogation, high contrast fringes whose linewidth depends on the time separating two pulses, are obtained. Compared to the continuous regime, the pulsed interrogation reduces the light shift by a factor 300 and permits to reach frequency stability 10 times better. A frequency stability of 9.10^-13 at 1 s has already been measured.