Circular beams were introduced as a very general solution to the paraxial wave equation carrying orbital angular momentum. Here, we study their properties by looking at their normalization and their expansion in terms of Laguerre–Gauss modes. We also study their far-field divergence and, for particular cases of the beam parameters, their possible experimental generation.
On the properties of circular beams: normalization, Laguerre–Gauss expansion, and free-space divergence
VALLONE, GIUSEPPE
2015
Abstract
Circular beams were introduced as a very general solution to the paraxial wave equation carrying orbital angular momentum. Here, we study their properties by looking at their normalization and their expansion in terms of Laguerre–Gauss modes. We also study their far-field divergence and, for particular cases of the beam parameters, their possible experimental generation.
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