An Ultra-Miniature Cell-Type Rb Atomic Clock Based on a Novel Waveguide Cavity

作者：Bai Li-Na^*; Gao Yuan-Hong; Liu Lei-Ji; Yang Lin; Zheng Xing-Shi; Zhou Wei

来源：Chinese Physics Letters, 2014, 31(9): 098402.

DOI：10.1088/0256-307X/31/9/098402

We introduce a novel waveguide cavity for ultra-miniature cell-type Rb atomic clock. In the cavity, a coupling ring shaped to be a semi-circle imports an rf signal from electronics, a screw regulator acts as a medium coupler to transmit the microwave signal into the absorption cell, and both the parts serve as a filter to suppress useless components except 6.8 GHz. Furthermore, the waveguide cavity can be used to design a miniature Rb atomic clock, and spread it to a chip-scale atomic clock. We have completed the design of the smallest cell-type Rb atomic clock in the world based on this waveguide cavity. It has not only a small size but also obviously better key performances than those of other miniature Rb atomic clocks. This ultra-miniature cell-type Rb atomic clock aging is 4 x 10(-13)/d, which is obviously slower than that of other miniature Rb atomic clocks.

• 出版日期2014-9
• 单位西安电子科技大学