CPT原子钟参数设计及其光谱实验研究

The Design for CPT Atomic Clock and Study for Spectral Experimental of CPT Atomic Clock

通过建立被动型CPT铯原子钟的理论模型,开展CPT信号与铯原子气室特性参量间关系的仿真分析和研究,建立铯原子气室设计及分析方法,得到了被动型CPT铯原子钟最佳设计参数,直径10mm、长度10mm、缓冲气体为N2的圆柱形铯原子气室,最佳工作参数为:工作温度为320K、气体压强值50Torr。并经多波长多普勒吸收光谱、CPT信号锁定及频率稳定度测试等实验,验证了理论模型的正确性,为开展高性能芯片级CPT铯原子钟的设计、参数优化提供了一种研究方法。

With the establishment of the theoretical model of passive CPT cesium atomic clock,developing simulation analysis and research on the relationship between the CPT signal and the parameters of cesium vapor cell,combined with the method of design and analysis for cesium vapor cell is established while the optimum design parameters are obtained.When the cesium vapor cell is cylindrical,the diameter is 10 mm,the length of cesium vapor cell is 10 mm,the cesium vapor cell operating temperature is 320 K,the buffer gas pressure is 30 torr,the cesium content is 100μg.With multi-wavelength Doppler absorption spectroscopy experiment and CPT signal lock and frequency stablish test,it is verified that the theoretical model is correct and providing for the method for the design and parameter optimization of high performance Chip-Scale-Atomic-Clock.