Journal
AMERICAN JOURNAL OF PHYSICS
Volume 76, Issue 10, Pages 916-921Publisher
AMER INST PHYSICS
DOI: 10.1119/1.2955792
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Funding
- Ministerio de Educacion y Ciencia, Spain [FIS2004-02466, BFM2003-02832, IS2004-20188-E]
- Xunta de Galicia [PGIDIT04TIC383001PR]
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An optical vortex is a screw dislocation in a light field that carries quantized orbital angular momentum and, due to cancellations of the twisting along the propagation axis, experiences zero intensity at its center. When viewed in a perpendicular plane along the propagation axis, the vortex appears as a dark region in the center surrounded by a bright concentric ring of light. We give detailed instructions for generating optical vortices and optical vortex structures by computer- generated holograms and describe various methods for manipulating the resulting structures. (c) 2008 American Association of Physics Teachers.
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