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Quasi-intrinsic angular momentum and the measurement of its spectrum

Zambrini, Roberta and Barnett, S.M. (2006) Quasi-intrinsic angular momentum and the measurement of its spectrum. Physical Review Letters, 96 (11). pp. 113901-1. ISSN 0031-9007

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Abstract

We introduce the concept of quasi-intrinsic angular momentum to denote fields for which the mean value of the angular momentum is unaltered by a lateral shift of the rotation axis but the spectrum changes. This property is exemplified by the orbital angular momentum of a beam of light about its propagation direction. We propose an interferometric experiment to measure efficiently the exact angular momentum spectrum and variance for light beams with any arbitrary spatial distribution.

Item type: Article
ID code: 2870
Keywords: quasi-intrinsic angular momentum, spectrum, orbital angular momentum, light, optics, photonics, Optics. Light
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Mr Derek Boyle
    Date Deposited: 05 Feb 2007
    Last modified: 06 Dec 2013 17:33
    URI: http://strathprints.strath.ac.uk/id/eprint/2870

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