High-performance and miniature pulse microwave source for Ramsey-CPT frequency standard

Abstract

Abstract:

In accordance with the high-performance and miniature requirement to pulse microwave source by the Ramsey-CPT atomic frequency standard, a pulse microwave source, with the characteristics of high stability, high resolution, fast frequency hopping speed, low phase noise, miniature, and small scanning step, is realized through direct digital frequency synthesizer (DDS) exciting phase-locked loop (PLL) frequency synthesizer and then connecting the digital step attenuator and the impedance matching circuit. Several schemes of the pulse microwave source for Ramsey-CPT atomic frequency standard are compared. The basic principle and the practical method of the pulse microwave source are introduced. At last, the best performance of the output signal is obtained by optimizing the simulation result. The pulse microwave source has excellent technical performance, and further improves the output signal of the CPT atomic frequency standard. Moreover, the overall design comes up to the miniaturized requirement, and is favorable to portable application of the Ramsey-CPT atomic frequency standard.

Key words: laser physics, atomic frequency standard, Ramsey-CPT, pulse microwave source, phase-locked loop, digital step attenuator

CLC Number:

TN743
TH714

GUAN Chao, ZHU Xiaosong, ZHOU Qun, GENG Qin. High-performance and miniature pulse microwave source for Ramsey-CPT frequency standard[J]. J4, 2012, 29(1): 52-57.

References

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