2007/01/31 by David A Smith, David A. Smith, Aidan S Arnold +5 · 1 citation
Engineering · Physics and Astronomy · #Advanced Materials Characterization Techniques #Cold Atom Physics and Bose-Einstein Condensates #Near-Field Optical Microscopy #physics.atom-ph #physics.optics
paper · pdf · doi:10.1088/0953-4075/41/12/125302
published as J. Phys. B 41, 125302 (2008) · Revised to incorporate referee suggestions, final version
openalex publication_date 2008/06/09 · arxiv created 2008/06/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Single-impulse three-dimensional magnetic focusing of vertically launched cold atoms has been observed. Four different configurations of the lens were used to vary the relative radial and axial focusing properties. Compact focused clouds of 85Rb were seen for all four configurations. It is shown that an atom-optical ray matrix approach for describing the lensing action is insufficient. Numerical simulation using a full approximation to the lens's magnetic field shows very good agreement with the radial focusing properties of the lens. However, the axial (vertical direction) focusing properties are less well described and the reasons for this are discussed.