All-glass 100 mm Diameter Visible Metalens for Imaging the Cosmos
Abstract
Metasurfaces, optics made from subwavelength-scale nanostructures, have been limited to millimeter-sizes by the scaling challenge of producing vast numbers of precisely engineered elements over a large area. In this study, we demonstrate an all-glass 100 mm diameter metasurface lens (metalens) comprising 18.7 billion nanostructures that operates in the visible spectrum with a fast f-number (f/1.5, NA=0.32) using deep-ultraviolet (DUV) projection lithography. Our work overcomes the exposure area constraints of lithography tools and demonstrates that large metasurfaces are commercially feasible. Additionally, we investigate the impact of various fabrication errors on the imaging quality of the metalens, several of which are unique to such large area metasurfaces. We demonstrate direct astronomical imaging of the Sun, the Moon, and emission nebulae at visible wavelengths and validate the robustness of such metasurfaces under extreme environmental thermal swings for space applications.
Keywords
Cite
@article{arxiv.2307.08186,
title = {All-glass 100 mm Diameter Visible Metalens for Imaging the Cosmos},
author = {Joon-Suh Park and Soon Wei Daniel Lim and Arman Amirzhan and Hyukmo Kang and Karlene Karrfalt and Daewook Kim and Joel Leger and Augustine M. Urbas and Marcus Ossiander and Zhaoyi Li and Federico Capasso},
journal= {arXiv preprint arXiv:2307.08186},
year = {2023}
}