IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control

Pulsed optically pumped rubidium clock with high frequency-stability performance

Salvatore Micalizio, A. Godone, Claudio Eligio Calosso, Filippo Levi, C. Affolderbach, Florian Gruet

Published Mar 1, 2012• 30 citations

Abstract

In this paper, we present the performance of a vapor-cell rubidium frequency standard working in the pulsed regime, in which the clock signal is represented by a Ramsey pattern observed on an optically detected laser absorption signal. The main experimental results agree with previously reported theoretical predictions. In particular, we measured a relative frequency stability of σy(τ) - 1.6 × 10(-13)τ-1/2 for integration times, τ, up to 200 s, which represents a record in short-term stability for a vapor-cell clock. We also discuss the most important physical phenomena that contribute to this result.

DOI: 10.1109/tuffc.2012.2215

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