Double-impulse magnetic focusing of launched cold atoms
Atomic Physics
2007-05-23 v2 Optics
Abstract
We have theoretically investigated 3D focusing of a launched cloud of cold atoms using a pair of magnetic lens pulses (the alternate-gradient method). Individual lenses focus radially and defocus axially or vice-versa. The performance of the two possible pulse sequences are compared and found to be ideal for loading both 'pancake' and 'sausage' shaped magnetic/optical microtraps. It is shown that focusing aberrations are considerably smaller for double-impulse magnetic lenses compared to single-impulse magnetic lenses. An analysis of the clouds focused by double-impulse technique is presented.
Keywords
Cite
@article{arxiv.physics/0512151,
title = {Double-impulse magnetic focusing of launched cold atoms},
author = {Aidan S Arnold and Matthew J Pritchard and David A Smith and Ifan G Hughes},
journal= {arXiv preprint arXiv:physics/0512151},
year = {2007}
}
Comments
14 pages, 6 figures. Accepted for publication in New Journal of Physics