Optical characterisation of micro-fabricated Fresnel zone plates for atomic waveguides

V. A. Henderson, M. Y. H. Johnson, Y. B. Kale, P. F. Griffin, E. Riis, A. S. Arnold

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Abstract

We optically assess Fresnel zone plates (FZPs) that are designed to guide cold atoms. Imaging of various ring patterns produced by the FZPs gives an average RMS error in the brightest part of the ring of 3% with respect to trap depth. This residue is attributed to the imaging system, incident beam shape and FZP manufacturing tolerances. Axial propagation of the potentials is presented experimentally and through numerical simulations, illustrating prospects for atom guiding without requiring light sheets.

Original languageEnglish
Pages (from-to)9072-9081
Number of pages10
JournalOptics Express
Volume28
Issue number7
Early online date16 Mar 2020
DOIs
Publication statusPublished - 30 Mar 2020

Keywords

  • physics.atom-ph
  • physics.optics
  • Fresnel zone plates
  • cold atoms
  • atomic waveguides

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