Fullwave Maxwell inverse design of axisymmetric, tunable, and multi-scale multi-wavelength metalenses
Fullwave Maxwell inverse design of axisymmetric, tunable, and multi-scale multi-wavelength metalenses
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DOI：
10.1364/oe.403192
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发表时间：
2020-11-09
期刊：
影响因子：
3.8
通讯作者：
Johnson, Steven G.
中科院分区：
文献类型：
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作者：
Christiansen, Rasmus E.;Lin, Zin;Johnson, Steven G.
我们展示了新的轴对称逆设计技术，可以解决根本上不同于传统镜头的问题，包括可重构透镜（改变多频焦点，以响应折射率的变化）和广泛分离的多波长透镜（λ = 1 μ m和10 μ m）。我们还提出了一个轴对称的反向设计的单色透镜在近红外线制造通过双光子聚合的实验验证。轴对称允许全波麦克斯韦解算器在需要域分解近似之前按比例放大到直径为数百甚至数千个波长的结构，而具有类似于10（5）自由度的多层拓扑优化可以解决具有挑战性的设计问题，即使仅限于轴对称结构。(C)根据OSA开放获取出版协议的条款，2020年美国光学学会
We demonstrate new axisymmetric inverse-design techniques that can solve problems radically different from traditional lenses, including reconfigurable lenses (that shift a multi-frequency focal spot in response to refractive-index changes) and widely separated multi-wavelength lenses (lambda = 1 mu m and 10 mu 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 similar to 10(5) degrees of freedom can tackle challenging design problems even when restricted to axisymmetric structures. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement