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Opt Lett. 2000 Feb 15;25(4):191-3.

Generation of a beam with a dark focus surrounded by regions of higher intensity: the optical bottle beam.


A computer-generated hologram is used to form an optical beam with a localized intensity null at its focus. The beam is a superposition of two Laguerre-Gaussian modes that are phased so that they interfere destructively to give a beam focus that is surrounded in all directions by regions of higher intensity. Beams of this kind will have applications in the optical trapping of macroscopic objects or atoms; hence the term optical bottle beam.

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