Pulsed Optically Pumped Rubidium Clock With High Frequency-Stability Performance
Author(s)
Micalizio, Salvatore
Godone, Aldo
Calosso, Claudio
Levi, Filippo
Date issued
April 3, 2012
In
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Vol
3
No
59
From page
457
To page
462
Reviewed by peer
1
Subjects
frequency stability optical pumping vapor-cell clock.
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.
Publication type
journal article