Contributions to the mid-term frequency noise of the pulsed CPT clock at SYRTE

摘要

We report here the performance obtained with a laboratory compact caesium clock based on coherent population trapping (CPT). The clock is working with two orthogonal linear polarizations made by two phase-locked continuous lasers tuned to 895 nm and separated by 9.192 GHz. Here we focus on the laser power and magnetic field fluctuations which mainly contribute to the mid-term frequency stability of the CPT clock.