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Updated: Mar 19, 2026

Preparation of Free-Surface Hyperbolic Water Vortices
Published on: July 28, 2023
Generation of deep ultraviolet vortices via amplitude and phase spiral zone plates
Abstract:
We report the design, fabrication, and demonstration of diffractive optical elements, amplitude, and phase spiral zone plates (SZPs), for generating optical vortices in the deep ultraviolet (DUV) range (260˘266nm). Fabricated via photolithography and plasma etching on fused silica, these SZPs efficiently convert Gaussian beams into vortex modes carrying orbital angular momentum. Experiments with a high-power radio-frequency photoinjector laser at Joint Institute for Nuclear Research produced DUV vortices with topological charge ℓ=1. Comparative analysis shows the phase SZP achieves ∼40% conversion efficiency. These results confirm SZPs' potential for DUV light structuring, enabling applications in electron beam shaping and accelerator technologies.
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