Measurements of frequency shifts in a high-performance CPT-based cesium cell atomic clock
Résumé
We report on measurements of frequency shifts in a high-performance microwave cesium vapor-cell atomic clock based on coherent population trapping (CPT). The dependence of the clock frequency on numerous experimental parameters, such as the laser power, the laser frequency, the microwave power, the cell temperature, the magnetic field, acousto-optic modulator (AOM) and electro-optic modulator (EOM) temperatures, or the light field polarization is measured. Coupled with the measurement of typical variations of experimental parameters, this study will provide a mid- and long-term stability budget of the clock and will help to identify key contributions to mitigate for improvement of the clock stability after 100 s.
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