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Parametric Down-Conversion For Light Beams Possessing Orbital Angular Momentum

Arlt, J., Dholakia, K., Allen, L., and Padgett, M.J. (1999) Parametric Down-Conversion For Light Beams Possessing Orbital Angular Momentum. Physical Review A: Atomic, Molecular and Optical Physics, 59 (5). pp. 3950-3952. ISSN 1050-2947 (doi:10.1103/PhysRevA.59.3950)

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Abstract

We investigate the spontaneous parametric down-conversion for light beams possessing orbital angular momentum. The experimental results indicate that the orbital angular momentum is not conserved within the classical light fields. This is in contrast to second harmonic generation where the conservation of orbital angular momentum leads to a well-defined mode transformation. We attribute this difference in behavior to the loss of spatial coherence within each of the down-converted fields. [S1050-2947(99)01205-6].

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s):Padgett, Prof Miles
Authors: Arlt, J., Dholakia, K., Allen, L., and Padgett, M.J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review A: Atomic, Molecular and Optical Physics
Journal Abbr.:Phys. Rev. A
Publisher:American Physical Society
ISSN:1050-2947
ISSN (Online):1094-1622

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