A New Pumping--Probing Scheme for the Optically PumpedCesium Beam Frequency Standard

A new pumping--probing scheme for the optically pumped cesium beam frequency standard has been experimentally tested in our laboratory. The stability of the optically pumped cesium beam frequency standard was measured by comparing its 10MHz output with an HP5071A commercial cesium atomic clock. The result shows that the frequency stability for the 1s and 30000s sample times are 1.2×10^-11 and 3.7×10^-13, respectively. It was proved that the new pumping scheme works well.