article published yes Rasmus E. Christiansen author Zin Lin author Charles Roques-Carmes author e2e68fc9-6505-11ef-a541-eb4e72cc3e82 Yannick Salamin author Steven E. Kooi author John D. Joannopoulos author Marin Soljačić author Steven G. Johnson author 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 ∼105 degrees of freedom can tackle challenging design problems even when restricted to axisymmetric structures. Optica Publishing Group2020 eng 1094-4087 2007.11661 3318286510.1364/oe.403192 282333854-33868 yes R. E. Christiansen <i>et al.</i>, “Fullwave Maxwell inverse design of axisymmetric, tunable, and multi-scale multi-wavelength metalenses,” <i>Optics Express</i>, vol. 28, no. 23. Optica Publishing Group, pp. 33854–33868, 2020. Christiansen, Rasmus E., et al. “Fullwave Maxwell Inverse Design of Axisymmetric, Tunable, and Multi-Scale Multi-Wavelength Metalenses.” <i>Optics Express</i>, vol. 28, no. 23, Optica Publishing Group, 2020, pp. 33854–68, doi:<a href="https://doi.org/10.1364/oe.403192">10.1364/oe.403192</a>. Christiansen, R. E., Lin, Z., Roques-Carmes, C., Salamin, Y., Kooi, S. E., Joannopoulos, J. D., … Johnson, S. G. (2020). Fullwave Maxwell inverse design of axisymmetric, tunable, and multi-scale multi-wavelength metalenses. <i>Optics Express</i>. Optica Publishing Group. <a href="https://doi.org/10.1364/oe.403192">https://doi.org/10.1364/oe.403192</a> Christiansen, Rasmus E., Zin Lin, Charles Roques-Carmes, Yannick Salamin, Steven E. Kooi, John D. Joannopoulos, Marin Soljačić, and Steven G. Johnson. “Fullwave Maxwell Inverse Design of Axisymmetric, Tunable, and Multi-Scale Multi-Wavelength Metalenses.” <i>Optics Express</i>. Optica Publishing Group, 2020. <a href="https://doi.org/10.1364/oe.403192">https://doi.org/10.1364/oe.403192</a>. Christiansen RE, Lin Z, Roques-Carmes C, et al. Fullwave Maxwell inverse design of axisymmetric, tunable, and multi-scale multi-wavelength metalenses. <i>Optics Express</i>. 2020;28(23):33854-33868. doi:<a href="https://doi.org/10.1364/oe.403192">10.1364/oe.403192</a> Christiansen RE, Lin Z, Roques-Carmes C, Salamin Y, Kooi SE, Joannopoulos JD, Soljačić M, Johnson SG. 2020. Fullwave Maxwell inverse design of axisymmetric, tunable, and multi-scale multi-wavelength metalenses. Optics Express. 28(23), 33854–33868. R.E. Christiansen, Z. Lin, C. Roques-Carmes, Y. Salamin, S.E. Kooi, J.D. Joannopoulos, M. Soljačić, S.G. Johnson, Optics Express 28 (2020) 33854–33868. 216372026-03-30T12:22:48Z2026-04-27T07:08:18Z