A new design of a diffused laser light optically pumped small cesium beam frequency standard

A new set-up of a small Cs clock has been successfully experimentally tested. The short-term stability (2x10(-12)) and the long-term stability (3.5x10(-13) for a day sample time) have been measured. Only one laser is needed without any frequency shift device. The light frequency shift caused by diffuse light was calculated and measured.