论文标题
轴对称，可调和多尺度多波长金属的全波麦克斯韦逆设计
Fullwave Maxwell inverse design of axisymmetric, tunable, and multi-scale multi-wavelength metalenses
论文作者
论文摘要
我们演示了新的轴对称逆设计技术，可以解决与传统镜头完全不同的问题，包括\ emph {Reconfigurable}镜头（这会响应于折射率 - index变化而变化多频焦点斑点和{\ emph {\ emph {\ emph {\ emph {velled}}}}}}多波动范围（$ 1和$ 1. $ 10 \，μ$ m）。我们还提出了通过两光子聚合制造的近红外轴对称性单色透镜的轴对称单色透镜的实验验证。轴对称性允许将全波麦克斯韦求解器扩展到数百甚至数千个直径的结构，然后才需要域分解近似值，而使用$ \ sim 10^5 $的自由度优化的多层拓扑优化，即使限制到限制到轴心对称的结构，也可以解决具有挑战性的设计问题。
We demonstrate new axisymmetric inverse-design techniques that can solve problems radically different from traditional lenses, including \emph{reconfigurable} lenses (that shift a multi-frequency focal spot in response to refractive-index changes) and {\emph{widely separated}} multi-wavelength lenses ($λ= 1\,μ$m and $10\,μ$m). We also present experimental validation for an axisymmetric inverse-designed monochrome lens in the near-infrared fabricated via two-photon polymerization. Axisymmetry allows fullwave Maxwell solvers to be scaled up to structures hundreds or even thousands of wavelengths in diameter before requiring domain-decomposition approximations, while multilayer topology optimization with $\sim 10^5$ degrees of freedom can tackle challenging design problems even when restricted to axisymmetric structures.
