Performance demonstration of a single-frequency optically-pumped cesium beam frequency standard for space applications

Abstract

Performance demonstration of a single-frequency opticallypumped cesium beam frequency standard for space applications S. Lecomte, M. Haldimann, R. Ruffieux, P. Thomann, et , which is compliant with the Galileo requirement. The atomic resonator is fully compliant to be operated with a single diode laser at 894 nm (D 1 line). Sensitivity measurements of the clock signal to the microwave power and to the optical pumping power are also presented. Present performance limitations are discussed and further improvements are proposed in order to reach our ultimate frequency stability goal of y =1x10 -12 -1/2 . The clock driving software is also briefly described.

Metrological and stability studies in high-performance rubidium vapor-cell atomic clocks

“…Meanwhile, thermal Cs beam clocks (e.g. [20]) have relatively large SWaP and moderate stability; nevertheless, they can deliver accuracy and are primarily used in synchronization applications. Active or passive hydrogen (H) masers (e.g.…”