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physics.optics2026
Electro-Optic Modulation in Polycrystalline Barium Titanate Metasurfaces Enhanced by Poling
Eleni Prountzou, Helena C. Weigand, Virginia Falcone +2
Electrically tunable metasurfaces leveraging the strong Pockel's effect in barium titanate (BaTiO or BTO) are a promising platform for reconfigurable free-space optical devices…
physics.optics2026
Wavelength-selective nonlinear wavefront control in resonant thin-film lithium niobate metasurfaces
Madona Mekhael, Timo Stolt, Helena Weigand +4
Nonlinear metasurfaces offer compact control over frequency conversion and wavefront shaping. However, existing approaches, often based on geometric phase, lack wavelength selectiv…