Li, Zhaoyi Pestourie, Raphael Park, Joon-Suh Huang, Yao-Wei Johnson, Steven G. Capasso, Federico 2024-01-19T12:02:47Z 2024-01-19T12:02:47Z 2022-05-24 2022-05 2041-1723 https://pubs.kist.re.kr/handle/201004/115225 The authors present a general inverse-design framework for large-area 3D meta-optics that show engineered focusing. Such meta-optics, in combination with a laser-illuminated micro-LCD, open a path towards a future virtual reality platform. Meta-optics has achieved major breakthroughs in the past decade; however, conventional forward design faces challenges as functionality complexity and device size scale up. Inverse design aims at optimizing meta-optics design but has been currently limited by expensive brute-force numerical solvers to small devices, which are also difficult to realize experimentally. Here, we present a general inverse-design framework for aperiodic large-scale (20k x 20k lambda(2)) complex meta-optics in three dimensions, which alleviates computational cost for both simulation and optimization via a fast approximate solver and an adjoint method, respectively. Our framework naturally accounts for fabrication constraints via a surrogate model. In experiments, we demonstrate aberration-corrected metalenses working in the visible with high numerical aperture, poly-chromatic focusing, and large diameter up to the centimeter scale. Such large-scale meta-optics opens a new paradigm for applications, and we demonstrate its potential for future virtual-reality platforms by using a meta-eyepiece and a laser back-illuminated micro-Liquid Crystal Display. English Nature Publishing Group Inverse design enables large-scale high-performance meta-optics reshaping virtual reality Article 10.1038/s41467-022-29973-3 1 Nature Communications, v.13, no.1 Nature Communications 13 1 Y scie scopus 000790385800005 Multidisciplinary Sciences Science & Technology - Other Topics Article BAND ACHROMATIC METALENS OPTIMIZATION ABERRATION COMPACT