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arXiv · 1911.00575

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
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Abstract

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 lineshape 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).

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M. Yu. Basalaev, V. I. Yudin, A. V. Taichenachev, M. I. Vaskovskaya, D. S. Chuchelov, S. A. Zibrov, V. V. Vassiliev, V. L. Velichansky. 2020-01-25. Dynamic continuous-wave spectroscopy of coherent population trapping at phase-jump modulation. https://doi.org/10.1103/physrevapplied.13.034060

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