5 papers
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…
Tunable polarization-entangled near-infrared photons from orthogonal GaAs nanowires
Elise Bailly-Rioufreyt, Zoya Polshchykova, Grégoire Saerens +10
Quantum entanglement is a fundamental resource for emerging quantum technologies, enabling secure communication and enhanced sensing. For decades, generating polarization entangled…
Efficient GHz electro-optical modulation with a nonlocal lithium niobate metasurface in the linear and nonlinear regime
Agostino Di Francescantonio, Alessandra Sabatti, Helena Weigand +8
Electro-optical modulation is widely employed for optical signal processing and in laser technology. To date, it is efficiently realized in integrated photonic systems as well as i…
Scalable Lithium Niobate Nanoimprinting for Nonlinear Metalenses
Ülle-Linda Talts, Helena C. Weigand, Irene Occhiodori +1
Miniaturizing nonlinear optical components is essential for integrating advanced light manipulation into compact photonic devices, enabling scalable and cost-effective applications…
Enhanced electro-optic modulation in resonant metasurfaces of lithium niobate
Helena Weigand, Viola V. Vogler-Neuling, Marc Reig Escalé +5
In display technologies or data processing, planar and subwavelength free-space components suited for flat photonic devices are needed. Metasurfaces, which shape the optical wavefr…