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 compar
ing its 10 MHz output with an HP5071A commercial cesium atomic clock. The r
esult shows that the frequency stability for the 1s and 30000s sample times
are 1.2 x 10(-11) and 3.7 x 10(-13), respectively. It was proved that the
new pumping scheme works well.