Demonstration reveals a method for generating vector beams using stacked dielectric metasurfaces, indicating potential advancements in optical technology.
While most prior studies have focused on scalar spatiotemporal optical vortices, we demonstrate a novel approach for generating spatiotemporal vector beams by vertically stacking two layers of dielectric metasurfaces functioning as spatial and temporal differentiators.
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Zheng et al. (2025) studied this question.
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