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. 2016 Mar 1;6:22082. doi: 10.1038/srep22082

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(a) Transverse intensity profiles of obstructed and unobstructed BG beam l = +3 after an obstruction of radius 1.5 mm (ζ = 0.71) at different locations along the propagation direction. (b) Normalized intensity cross–sections of obstructed and unobstructed beam in the plane of SLM–C.