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Orbital angular momentum of the laser beam and the second order intensity moments

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Abstract

From the wave equation of a generalized beam the orbital angular momentum is studied. It is shown that the orbital angular momentum exists not only in the Laguerre-Gaussian beam, but in any beam with an angular-dependent structure. By calculating the second order intensity moments of the beam the relation between the orbital angular momentum and the second order moments (x θy), (y θx) is given. As an example the orbital angular momentum of the general astigmatic Gaussian beam is studied.

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Correspondence to Chunqing Gao.

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Gao, C., Wei, G. & Weber, H. Orbital angular momentum of the laser beam and the second order intensity moments. Sci. China Ser. A-Math. 43, 1306–1311 (2000). https://doi.org/10.1007/BF02880068

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  • DOI: https://doi.org/10.1007/BF02880068

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