Fig. 5: Decomposition of LG vortex beams.
From: Optical vortices 30 years on: OAM manipulation from topological charge to multiple singularities
Examples of the decomposition of LG modes (LG0,1 (a) and LG0,2 (b)) into HG modes according to Eq. (7), where the insets in the dotted box show the corresponding vortex phase distributions
