采用铯束管荧光稳频技术的小型光抽运铯原子频率标准

对于小型光抽运铯原子频率标准来说，激光稳频参考源的稳定性决定了激光系统的频率稳定性，进而决定了整机的频率稳定度指标。激光稳频可以采用饱和吸收稳频和铯束管荧光稳频两种方案。经对比了采用这两种激光稳频方式的整机指标，取得了初步的结果：与采用饱和吸收稳频相比，采用铯束管荧光稳频后，整机的短期稳定度指标没有明显恶化，长期稳定度指标有了明显提升，3.21E-14/100 000s，1.13E-14/400 000s，未出现闪变平台，仍在继续测试中。结果显示，铯束管荧光稳频技术应用光抽运小型铯原子频率标准，具有提高整机长期稳定度指标和增强环境适应性的潜力。

Stabilizing the Optical Frequency by Laser-induced Fluorescence in Optically Pumped Cs Beam Frequency Standard

For Optically Pumped Cesium Beam Frequency Standard,the stability of the reference source which is used to stabilize laser frequency,determine the frequency stability of the laser system,and then that of the Optically Pumped Cesium Beam Frequency Standard.Two methods can be used to stabilize laser frequency,which are by saturated absorption spectroscopy(SAS),and by laser-induced fluorescence.We compared the two methods and achieved preliminary results:compared to SAS,the short-term stability has not deteriorated significantly,while the long-term stability has improved/100000 s,1.13 E-14 technology of cesium beam tube has potential to improve the long-term stability and enhance environmental adaptabilityof the Cesium Atomic Clock.