Preprint article · Journal article
Fullwave Maxwell inverse design of axisymmetric, tunable, and multi-scale multi-wavelength metalenses
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 ( λ= 1 μm and 10μm).
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 ∼ 105 degrees of freedom can tackle challenging design problems even when restricted to axisymmetric structures.
Language: | English |
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Year: | 2020 |
Pages: | 33854-33868 |
ISSN: | 10944087 |
Types: | Preprint article and Journal article |
DOI: | 10.1364/OE.403192 |
ORCIDs: | Christiansen, Rasmus E. and 0000-0003-1797-2968 |