Designing large, high-efficiency, high-numerical-aperture, transmissive meta-lenses for visible light
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CitationByrnes, Steven J., Alan Lenef, Francesco Aieta, and Federico Capasso. 2016. “Designing Large, High-Efficiency, High-Numerical-Aperture, Transmissive Meta-Lenses for Visible Light.” Optics Express 24 (5) (March 1): 5110. doi:10.1364/oe.24.005110.
AbstractA metasurface lens (meta-lens) bends light using nanostructures on a flat surface. Macroscopic meta-lenses (mm- to cm-scale diameter) have been quite difficult to simulate and optimize, due to the large area, the lack of periodicity, and the billions of adjustable parameters. We describe a method for designing a large-area meta-lens that allows not only prediction of the efficiency and far-field, but also optimization of the shape and position of each individual nanostructure, with a computational cost that is almost independent of the lens size. As examples, we design three large NA = 0.94 meta-lenses: One with 79% predicted efficiency for yellow light, one with dichroic properties, and one broadband lens. All have a minimum feature size of 100nm.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:27770113
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