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Optics Communications

Efficiency in the loading of a sodium magneto-optical trap from alkali metal dispensers

R. Muhammad, Jaime Ramirez-Serrano, K. M. F. Magalhães, Rafael Rothganger de Paiva, R. F. Shiozaki, J. Weiner, Vanderlei Salvador Bagnato

Published Jul 24, 2008• 9 citations
Publisher
DOI
10.1016/j.optcom.2008.06.069

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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.