Meta-lenses are 2D optical elements with nanostructures that control light waves, allowing for rapid phase and amplitude changes. They offer features like polarization control and higher spatial resolution compared to traditional lenses, making them valuable for applications such as biomedical imaging and virtual reality. However, meta-lenses have drawbacks including stray light issues, tradeoffs between numerical aperture and efficiency, and limitations with single-surface designs.
Freeform meta-surfaces, using more flexible pillar shapes, can address these issues and improve efficiency. The challenge in meta-lens design lies in simulating complex physics due to computation barriers and balancing optimization with manufacturability.
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Jan-Matthias Braun 糖果派对 Applied AI and Data Science mb@mmmi.sdu.dk |
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Esmaeil Nadimi Professor and Head of Unit 糖果派对 Applied AI and Data Science esmi@mmmi.sdu.dk |