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Article Dans Une Revue Applied Physics Letters Année : 2009

Ultralow noise microwave generation with fiber-based optical frequency comb and application to atomic fountain clock

Résumé

We demonstrate the use of a fiber-based femtosecond laser locked onto an ultrastable optical cavity to generate a low-noise microwave reference signal. Comparison with both a cryogenic sapphire oscillator (CSO) and a titanium-sapphire-based optical frequency comb system exhibit a stability of about 3×10-15 between 1 and 10 s. The microwave signal from the fiber system is used to perform Ramsey spectroscopy in a state-of-the-art cesium fountain clock. The resulting clock is compared to the CSO and exhibits a stability of 3.5×10-14tau-1/2.

Dates et versions

hal-03786438 , version 1 (23-09-2022)

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Jacques Millo, Michel Abgrall, Michel Lours, E. M. L. English, Haifeng Jiang, et al.. Ultralow noise microwave generation with fiber-based optical frequency comb and application to atomic fountain clock. Applied Physics Letters, 2009, 94, pp.1105. ⟨10.1063/1.3112574⟩. ⟨hal-03786438⟩
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