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A compact laser pumped vapor-cell cesium clock is introduced. The microwave cavity design is essential to the performance of the clock. In order to get a great homogeneity of the magnetic field, we use a compact magnetron cavity, which meanwhile reduces the size of physics package. Theoretical analysis shows the basic structure of the magnetron cavity, which is proved and further optimized by software...
A compact caesium-atomic-beam microwave clock is investigated at Peking University. The atomic beam is prepared by magnetic state selection and detected, after microwave interrogation, by means of laser-induced fluorescence. Distributed feedback laser diodes are adopted for their large mode-hopping-free ranges, which ensure a care-free long-term operation. Besides, digital servo systems can automatically...
This paper describes the compact cesium beam frequency standard with magnetic state preparation and optical detection. We present the experimental set-up in detail. Results on its frequency stability and frequency shift are given. The short-term stability is 1.2×10−11 at 1 s and flicker floor is 2×10−13. Some approaches to improve the long-term stability are discussed.
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