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Active Light-Shift Stabilization in Modulated CPT Clocks



V Shah, P Schwindt, Vladislav Gerginov, Svenja A. Knappe, Leo W. Hollberg, John E. Kitching


We demonstrate a simple technique to significantly improve the long-term frequency stability in atomic clocks vased on coherent population trapping (CPT). In this technique an additional servo is used to control the local oscillator power level to ensure that the clock frequency is alwaus given to the atomic resonance frequency that is not perturbed by the incident light fields.
Proceedings Title
IEEE International Frequency Control Symposim
Conference Dates
June 5-7, 2006
Conference Title
Proceedings of the IEEE International Frequency Control Symposium


coherent population trapping, frequency standards, light shifts


Shah, V. , Schwindt, P. , Gerginov, V. , Knappe, S. , Hollberg, L. and Kitching, J. (2005), Active Light-Shift Stabilization in Modulated CPT Clocks, IEEE International Frequency Control Symposim (Accessed June 24, 2024)


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Created June 1, 2005, Updated February 17, 2017