Absolute frequency measurement of the magnesium intercombination transition $^1S_0 \to ^3P_1$

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dc.creatorFriebe, Jan
dc.creatorPape, André
dc.creatorRiedmann, Matthias
dc.creatorMoldenhauer, Karsten
dc.creatorMehlstäubler, Tanja
dc.creatorRehbein, Nils
dc.creatorLisdat, Christian
dc.creatorRasel, Ernst M.
dc.creatorErtmer, Wolfgang
dc.creatorSchnatz, Harald
dc.creatorLipphardt, Burghard
dc.creatorGrosche, Gesine
dc.date2007-11-30
dc.date.accessioned2026-07-07T12:59:55Z
dc.date.available2026-07-07T12:59:55Z
dc.descriptionWe report on a frequency measurement of the $(3s^2)^1S_0\to(3s3p)^3P_1$ clock transition of $^{24}$Mg on a thermal atomic beam. The intercombination transition has been referenced to a portable primary Cs frequency standard with the help of a femtosecond fiber laser frequency comb. The achieved uncertainty is $2.5\times10^{-12}$ which corresponds to an increase in accuracy of six orders of magnitude compared to previous results. The measured frequency value permits the calculation of several other optical transitions from $^1S_0$ to the $^3P_J$-level system for $^{24}$Mg, $^{25}$Mg and $^{26}$Mg. We describe in detail the components of our optical frequency standard like the stabilized spectroscopy laser, the atomic beam apparatus used for Ramsey-Bordé interferometry and the frequency comb generator and discuss the uncertainty contributions to our measurement including the first and second order Doppler effect. An upper limit of $3\times10^{-13}$ in one second for the short term instability of our optical frequency standard was determined by comparison with a GPS disciplined quartz oscillator.
dc.description8 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/0711.4926
dc.identifierhttp://arxiv.org/abs/0711.4926
dc.identifierPhys. Rev. A 78, 033830 (2008)
dc.identifierdoi:10.1103/PhysRevA.78.033830
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225719
dc.subjectAtomic Physics
dc.titleAbsolute frequency measurement of the magnesium intercombination transition $^1S_0 \to ^3P_1$
dc.typetext

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