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ferroelectricity 1local-field effects 1nonlinear optics 1soft phonon modes 1SrTiO3 1terahertz spectroscopy 1

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20242026
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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…