A method of dynamic continuous-wave spectroscopy of coherent population trapping (CPT) resonances using phase modulation of the jump type is developed. The time evolution of the spectroscopic signal is investigated. A method for the formation of an error signal for frequency stabilization is proposed. We show that our approach has a reduced sensitivity to the line-shape asymmetry of the CPT resonance. The experimental results are in good qualitative agreement with theoretical predictions based on a mathematical model of a three-level $\mathrm{\Lambda }$ system in a bichromatic field. This method can be used in atomic frequency standards (including chip-scale atomic clocks).

中文翻译：

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跳相干相干捕获的动态连续波谱

开发了一种使用跳跃型相位调制的动态连续波光谱相干种群捕获（CPT）共振的方法。研究了光谱信号的时间演变。提出了一种形成误差信号以进行频率稳定化的方法。我们表明，我们的方法对CPT谐振的线形不对称性具有降低的敏感性。实验结果与基于三级数学模型的理论预测在质量上吻合良好$\mathrm{\Lambda }$双色场中的系统。此方法可用于原子频率标准（包括芯片级原子时钟）。