Dynamic Continuous-Wave Spectroscopy of Coherent Population Trapping at Phase-Jump Modulation

M. Yu Basalaev, V. I. Yudin, A. V. Taichenachev, M. I. Vaskovskaya, D. S. Chuchelov, S. A. Zibrov, V. V. Vassiliev, V. L. Velichansky

Research output: Contribution to journalArticlepeer-review


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 Λ system in a bichromatic field. This method can be used in atomic frequency standards (including chip-scale atomic clocks).

Original languageEnglish
Article number034060
Number of pages10
JournalPhysical Review Applied
Issue number3
Publication statusPublished - Mar 2020


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