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Influence of laser sources with different spectral properties on the performance of vapor cell atomic clocks based on lin‖lin CPT
Auteur(s)
Date de parution
2009-5-26
In
IEEE Tran. on Ultrasonics, Ferroelectronics and Frequency Control
Vol.
5
No
56
De la page
926
A la page
930
Résumé
We evaluate the influence of 2 types of laser sources with different spectral profiles on the performance of vapor cell atomic clocks based on lin
lin coherent population trapping (CPT) resonances. We show that a short-term stability of 1-2 · 10 -11¿-1/2 may be reached in a compact system using a modulated vertical cavity surface-emitting laser. Here the stability is limited by the detection noise level and can be improved up to a factor of 4 by increasing the lock-in detection frequency to several tens of kilohertz, which is not possible in standard double resonance atomic clocks. We compare these results with CPT prepared under the same experimental conditions, using 2 phase-locked extended cavity diode lasers, with which we predict a challenging short-term stability of 1-3·10 -13 ¿ -1/2 , comparable to the state-of-the-art laser-pumped Rb-clocks.
Autre version
https://doi.org/10.1109/TUFFC.2009.1125
Type de publication
Resource Types::text::journal::journal article
