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

Chunqing Gao; Guanghui Wei; Horst Weber

doi:10.1007/BF02880068

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

Chunqing Gao^*, Guanghui Wei, Horst Weber

^*Corresponding author for this work

School of Optics and Photonics

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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 θ_y〉, 〈y θ_x〉 is given. As an example the orbital angular momentum of the general astigmatic Gaussian beam is studied.

Original language	English
Pages (from-to)	1306-1311
Number of pages	6
Journal	Science in China, Series A: Mathematics
Volume	43
Issue number	12
DOIs	https://doi.org/10.1007/BF02880068
Publication status	Published - Dec 2000

Keywords

Beam characterization
Orbital angular momentum
Second order moments

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10.1007/BF02880068

Cite this

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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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author = "Chunqing Gao and Guanghui Wei and Horst Weber",

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AU - Gao, Chunqing

AU - Wei, Guanghui

AU - Weber, Horst

PY - 2000/12

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N2 - 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.

AB - 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.

KW - Beam characterization

KW - Orbital angular momentum

KW - Second order moments

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JF - Science in China, Series A: Mathematics

IS - 12

ER -

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

Abstract

Keywords

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