Communication Dans Un Congrès Année : 2018

Reducing the effect of light shift on a pulsed CPT-based clock

Résumé

Vapor cell atomic clocks are widely appreciated for their excellent short-term fractional frequency stability and their compactness. However, they are known to suffer on medium and long time scales from significant frequency instabilities, generally attributed to light-induced frequency shift effects. We will show the in-progress improvement of a high-performance Cs cell CPT-based atomic clock. There will be a strong emphasis on the first realization and result of the auto-balanced Ramsey interrogation protocol on a CPT-based Cs cell clock showing promising results for significantly reducing the effect of light shift on the frequency. The Allan deviation of the clock frequency has been improved to 2 × 10-13 t-1/2 for 10000 s of averaging time reaching 2 × 10-15 at 10000 s.

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Dates et versions

hal-02867845 , version 1 (15-06-2020)

Identifiants

  • HAL Id : hal-02867845 , version 1

Citer

Michael Petersen, Moustafa Abdel Hafiz, Grégoire Coget, Claudio Calosso, S Guerandel, et al.. Reducing the effect of light shift on a pulsed CPT-based clock. European Frequency and Time Forum, Apr 2018, Turin, Italy. ⟨hal-02867845⟩
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