^pof;
Electricity;
and;
Quantum;
Metrology;
National;
Institute;
of;
Beijing;
100013;
Precision;
Instruments;
Mechanology;
Tsinghua;
University;
100084;
optical;
Engineering;
Technology;
100081;
频率稳定度; 窄线宽激光; 激光二极管; 激光器系统; 原子; 俘获; 冷却; 二阶;