科研之友
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摘要
We propose an novel kind of interferometer to generate various quasinondiffracting vortex lattices with high topological charges. The wave vectors of the interfering beams distribute spatial-symmetrically on the surface patchwork of two concentric cones of different opening angles, and their transverse components site at the vertices of two mutual-inscribed common regular polygons. With certain beam number and particular initial phase distribution at the beams, novel vortex lattices such as Kagome type lattice with unusual vortex distribution are obtained. We further extend such interferometric scheme to multipoint interferometers for easier experimental realization, where the generated vortex lattices lose nondiffracting property. Such interferometric method have potential applications in fields such as direct nanostructure writings and multichannel optical manipulations.
