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Beam moments and angular momentum in non-uniformly polarized beams

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2009-05-15
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Elsevier Science BV
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The angular momentum of non-uniformly totally polarized beams is investigated using methods from the beam characterization approach. The relationship between the elements of the beam matrix for the two components of the field and the angular momentum is given. The unconventional distribution of the polarization across the beam profile could result in contributions to both the spin and orbital terms of the angular momentum. To illustrate this, a particular example with a vortex beam is considered.
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© 2009 Elsevier B.V. This work has been supported by the Ministerio de Educacion y Ciencia of Spain, project FIS2007-63396, and by Comunidad de Madrid-Universidad Complutense, Research Group Program CCG07-UCM/ESP-3070. We would also like to thank the referees for their helpful comments on the manuscript.
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