Fullwave Maxwell inverse design of axisymmetric, tunable, and multi-scale multi-wavelength metalenses
Author(s)Christiansen, Rasmus E; Lin, Zin; Roques-Carmes, Charles; Salamin, Yannick; Kooi, Steven E; Joannopoulos, John; Soljacic, Marin; Johnson, Steven G; ... Show more Show less
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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 10 µm). 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 ∼10[superscript 5] degrees of freedom can tackle challenging design problems even when restricted to axisymmetric structures.
DepartmentMassachusetts Institute of Technology. Department of Mathematics; Massachusetts Institute of Technology. Research Laboratory of Electronics; Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Optical Society of America (OSA)
Christiansen, Rasmus E. et al. "Fullwave Maxwell inverse design of axisymmetric, tunable, and multi-scale multi-wavelength metalenses." Optics Express 28, 23 (October 2020): 33854-33868 © 2020 Optical Society of America
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