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We have studied the spatial intensity distribution of optical vortex beams both theoretically and experimentally. We show that the area of the bright ring present in optical vortex increases with its order along with the inner and outer radii of the vortex beams.
Superposition of two optical vortex beams form composite vortex beam and the characteristics of the resultant depend on the separation and the relative phases of the interfering vortex beams. We analyze these composite vortex filters.
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