Description

By combining sub-wavelength optical engineering with inverse design approaches, we will design, fabricate and characterize robust, high-fidelity, and programmable metasurface for nonlinear beam shaping, including the generation of vectorial, topological, and multidimensional structured light at harmonic frequencies. These methods provide a framework to tackle current challenges, such as
preserving complex beam topologies during nonlinear conversion, improving conversion efficiencies, and mitigating sensitivity to fabrication imperfections

Skills required

High-quality, rigorous and motivated student, with either a master in physics or an engineering diploma. Solid background in both theoretical and experimental optics, plus a strong taste for physics and research.

Bibliography

[1] Rong R, et al. Customizing 3D polarization structures at second harmonic frequency. Laser Photonics Rev. 2025.
[2] Menshikov E, et al. Light structuring via nonlinear total angular momentum addition with flat optics. Light Sci Appl. 2025.
[3] Ren H, et al. Three-dimensional vectorial holography based on machine learning inverse design. Sci Adv. 2020.
[4] Gao J, et al. Topology-imprinting in nonlinear metasurfaces. Sci Adv. 2025.

Keywords

metasurface, inverse design