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Long-term Stability of NIST Chip-Scale Atomic Clock Physics Packages



Svenja A. Knappe, V Shah, Vladislav Gerginov, Alan Brannon, Leo W. Hollberg, John E. Kitching


We present measurements regarding the long-term frequency instability of NIST CSAC physics packages. Changes of the clock frequency are caused mainly through time-dependent light shifts by the frequency-modulated VCSEL and properties of the vapor cell. We suggest advanced CPT interrogation schemes to relax the requirements on the temperature stability of the VCSEL as well as the power of the local oscillator. Finally, we discuss the advantages and limitations of these techniques when implemented into a small package.
Proceedings Title
Proc. 2006 PTTI Mtg.


chip-scale atomic clock, coherent population trapping, CPT, CSAC, microfabrication


Knappe, S. , Shah, V. , Gerginov, V. , Brannon, A. , Hollberg, L. and Kitching, J. (2006), Long-term Stability of NIST Chip-Scale Atomic Clock Physics Packages, Proc. 2006 PTTI Mtg., [online], (Accessed April 19, 2024)
Created December 5, 2006, Updated August 10, 2018