期刊
OPTICS EXPRESS
卷 31, 期 13, 页码 21399-21406出版社
Optica Publishing Group
DOI: 10.1364/OE.493216
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In this study, a design method is proposed to achieve large scale achromatic hybrid lens with no residual dispersion by considering the refraction element and metasurface together as a whole. The tradeoff between the meta-unit library and the characteristics of resulting hybrid lenses is also discussed in detail, and a centimeter scale achromatic hybrid lens is realized to demonstrate the effectiveness of the method.
Metasurface can be used in combination with singlet refractive lens to eliminate chromaticity, in which the metasurface usually works as a dispersion compensator. Such a kind of hybrid lens, however, usually has residual dispersion due to the limit of meta unit library. Here, we demonstrate a design method that considers the refraction element and metasurface together as a whole to achieve large scale achromatic hybrid lens with no residual dispersion. The tradeoff between the meta-unit library and the characteristics of resulting hybrid lenses is also discussed in detail. As a proof of concept, a centimeter scale achromatic hybrid lens is realized, which shows significant advantages over refractive lenses and hybrid lenses designed by previous methods. Our strategy would provide guidance for designing high-performance macroscopic achromatic metalenses.& COPY; 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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