Técnicas de resfriamento e aprisionamento de átomos aplicadas a átomos de estrôncio

M. L. Miguez

Published Sep 20, 2013• 0 citations

Abstract

The present work describes the methods used to obtain a sample of ultra cold atoms of strontium.The methods necessary for obtaining the sample are: a Zeeman decelerator and a two step magneto-optical trap (MOTs).The first MOT works on the blue transition 1 S 0 -1 P 1 while the second is operating on the red transition 1 S 0 -3 P 1 transition.In the first stage a laser operating at 497nm is used to drive the 3 P 2 -3 D 2 transition in order to prevent atoms accumulating in the 3 P 1 dark state.The last stage, after cooling, consists in a dipole trap for strontium atoms using only one laser beam with 1064nm wavelength.This trap is loaded by the transfer of a pre cooled atomic sample.We explain how the analysis and acquisition of the presented data are made.We also emphasize the importance of the obtained results for the current project as well as for future ones.

DOI: 10.11606/d.76.2013.tde-20122013-091001

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