1992/01/01 by Chang Liu, Sifei Chen, Ziyu Chen +10
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic and Subatomic Physics Research #History and Developments in Astronomy #Quantum optics and atomic interactions #Stellar, planetary, and galactic studies
paper · doi:10.1063/5.0046575
openalex publication_date 1992/01/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/04/28
The microwave spectrum line shape and the signal-to-noise ratio of a compact optically detected magnetic-state-selection cesium beam clock are analyzed in this paper. As the noise analysis shows, the performance is related to the atomic utilization ratio and locking parameters when the laser frequency noise is the dominant noise source. Methods are adopted for realizing better short-term frequency stability of the clock, including using a highly efficient state-selection cesium beam tube, optimizing the locking parameters, and stabilizing the microwave power to maximize the error signal. After optimization, the signal-to-noise ratio of the clock reaches 7.0 × 10<sup>3</sup> in a bandwidth of 1 Hz and the clock demonstrates a short-term stability of 4.1 × 10<sup>-12</sup> τ<sup>-1/2</sup>. The five-day Allan standard deviation reaches 7.7 × 10<sup>-15</sup>.