ArticleNanophotonics (Berlin, Germany)2025
Curved geometric-phase optical element fabrication using top-down alignment.
Article in Nanophotonics (Berlin, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Advanced optical technologies, such as next-generation displays and holographic systems, demand high efficiency, lightweight designs, compact dimensions, and compatibility with curved and thin substrates. However, current optical devices for virtual and augmented reality displays, such as surface relief and holographic gratings, face challenges like light scattering, low optical efficiency, and limited scalability. Here, we present a geometric phase optical element (GPOE) fabricated using geometric-phase modulation. A pixelated nano grating system was employed, and reactive mesogens were aligned and transferred via a top-down imprinting process. The resulting GPOE exhibits a thin profile, compatibility with curved surfaces, and scalability for mass production. Integrating additional optical components, we realized a multi-focal GPOE and validated its optical performance. This innovation highlights the potential of GPOEs as compact, next-generation optical components for advanced curved-surface systems.
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