Two-dimensional magneto-optical trap as a source for cold strontium atoms

We report on the realization of a transversely loaded two-dimensional magneto-optical trap serving as a source for cold strontium atoms. We analyze the dependence of the source's properties on various parameters, in particular the intensity of a pushing beam accelerating the atoms out of the so...

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Hauptverfasser: Nosske, Ingo (VerfasserIn) , Weidemüller, Matthias (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 15 November 2017
In: Physical review
Year: 2017, Jahrgang: 96, Heft: 5
ISSN:2469-9934
DOI:10.1103/PhysRevA.96.053415
Online-Zugang:Resolving-System, Volltext: http://dx.doi.org/10.1103/PhysRevA.96.053415
Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.96.053415
Volltext
Verfasserangaben:Ingo Nosske, Luc Couturier, Fachao Hu, Canzhu Tan, Chang Qiao, Jan Blume, Y. H. Jiang, Peng Chen, and Matthias Weidemüller

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520 |a We report on the realization of a transversely loaded two-dimensional magneto-optical trap serving as a source for cold strontium atoms. We analyze the dependence of the source's properties on various parameters, in particular the intensity of a pushing beam accelerating the atoms out of the source. An atomic flux exceeding 109atoms/s at a rather moderate oven temperature of 500∘C is achieved. The longitudinal velocity of the atomic beam can be tuned over several tens of m/s by adjusting the power of the pushing laser beam. The beam divergence is around 60 mrad, determined by the transverse velocity distribution of the cold atoms. The slow atom source is used to load a three-dimensional magneto-optical trap realizing loading rates up to 109atoms/s without indication of saturation of the loading rate for increasing oven temperature. The compact setup avoids undesired effects found in alternative sources like, e.g., Zeeman slowers, such as vacuum contamination and black-body radiation due to the hot strontium oven. 
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