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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 9,
  • Issue 1,
  • pp. 011402-
  • (2011)

Production of annular flat-topped vortex beams

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Abstract

A model of an annular flat-topped vortex beam based on multi-Gaussian superimposition is proposed. We experimentally produce this beam with a computer-generated hologram (CGH) displayed on a spatial light modulator (SLM). The power of the beam is concentrated on a single-ring structure and has an extremely strong radial intensity gradient. This beam facilitates various applications ranging from Sisyphus atom cooling to micro-particle trapping.

© 2011 Chinese Optics Letters

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