Recent Results on a Pulsed CPT Clock

T. Zanon, S. Tremine, S. Guerandel, F. Dahes, E. de Clercq, A. Clairon, N. Dimarcq

Abstract:	CPT clocks are very attractive for their miniaturization potentiality. Nevertheless, two main effects limit today their performance : the optical pumping associated with circularly polarized lasers and the line broadening due to saturation effects. We propose to overcome these limitations by the use of orthogonal linear laser polarizations and a pulsed interrogation sequence. The optimization of the time sequence leading to the best characteristics (contrast, linewidth) of the dark resonance is discussed. Very preliminary measurements of the frequency stability demonstrate an interesting performance of 3.5 10-12t -1/2.
Published in:	Proceedings of the 37th Annual Precise Time and Time Interval Systems and Applications Meeting August 29 - 31, 2005 Vancouver, Canada
Pages:	774 - 777
Cite this article:	Zanon, T., Tremine, S., Guerandel, S., Dahes, F., de Clercq, E., Clairon, A., Dimarcq, N., "Recent Results on a Pulsed CPT Clock," Proceedings of the 37th Annual Precise Time and Time Interval Systems and Applications Meeting, Vancouver, Canada, August 2005, pp. 774-777.
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