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arXiv:1003.5144 · Applied Physics B

Electron beam driven alkali metal atom source for loading a magneto-optical trap in a cryogenic environment

Stefan Haslinger, Robert Amsüss, Christian Koller, Christoph Hufnagel, N. Lippok, Johannes Majer, J. Verdú, S. Schneider, Jörg Schmiedmayer

Published Mar 1, 2011• 3 citations
arXivHTMLPDF
DOI
10.1007/s00340-011-4447-x

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We report on a directional atomic beam created using an alkali metal dispenser and a nozzle. By applying a high current (15 A) pulse to the dispenser at room temperature we can rapidly heat it to a temperature at which it starts dispensing, avoiding the need for preheating. The atomic beam produced is capable of loading 90% of a magneto-optical trap (MOT) in less than 7 s while maintaining a low vacuum pressure of <10(-11) Torr. The transverse velocity components of the atomic beam are measured to be within typical capture velocities of a rubidium MOT. Finally, we show that the atomic beam can be turned off within 1.8 s.