27 April 2006 Generation of high-order optical vortices
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Array of fundamental Gaussian beams located on the surface of a hyperboloid of revolution forms a regular net of optical vortices whereas a resulting field represents a singular Bessel-Gaussian beam. A total topological charge of the beam is defined by a phase matching in the beam's array. Such simple key inferences were drawn from our theoretical analysis of light scattering with a stack of optical wedges. We experimentally found out that a Gaussian beam diffracted by a system of dielectrical wedges carried over central-positioned optical vortex, whose topological charge was equal to a number of wedges in the stack.
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Ya. V. Izdebskaya, V. G. Shvedov, A. V. Volyar, "Generation of high-order optical vortices", Proc. SPIE 6188, Optical Micro- and Nanometrology in Microsystems Technology, 61881J (27 April 2006); doi: 10.1117/12.663016; https://doi.org/10.1117/12.663016


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