Abstract
In this paper, we propose a dual-mode Ramsey cavity for a dual Rb/Cs atomic clock, with resonances at 6.83GHz and 9.19GHz under the two different operating modes, respectively. Thus, the proposed cavity can excite Rb atoms and Cs atoms clock transition in the same environment (e.g., static magnetic field, temperature, and/or the asymmetric length between the two arms due to a single U-shaped structure). This design provides a compact physical package for a dual Rb/Cs clock. Another potential application of the dual-mode is high-accuracy comparison measurement. As an example, a dual-mode cavity with TE105 and TE109 modes was simulated.
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