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The nonparaxial propagation of the TEM0l⁎ doughnut beam with the orbital angular momentum in the far field by Zhengling Wang; Ming Zhou; Wei Zhang; Chuanyu Gao; Guorong Cao is a Engineering article available to read on EtoBox.

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The analytical expression for nonparaxial electric field amplitude of the TEM 0l ⁎ doughnut beam with the orbital angular momentum quantum number l is derived in the far field by means of the angular spectrum representation and the stationary phase method. It is shown that the divergent angle of the far field of TEM 0l ⁎ doughnut beam will be smaller with the decreasing of the orbital angular momentum quantum number l or the increasing of the beam waist width w of the initial beam. And the maximal radial intensity of the beam is decreased with its propagation at different rates for different l and w.

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Author

Zhengling Wang; Ming Zhou; Wei Zhang; Chuanyu Gao; Guorong Cao

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0030-4018)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)