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A Hybrid Dielectric-Semiconductor Metasurface for Efficient Second-Harmonic Generation

Sarma, Raktim S.; De Ceglia, Domenico; Nookala, Nishant; Vincenti, Maria A.; Campione, Salvatore; Wolf, Omri; Scalora, Michael; Belkin, Mikhail; Brener, Igal B.

We experimentally demonstrate a novel approach of using coupling between a leaky mode resonance and intersubband transitions in semiconductor quantum wells to realize a hybrid dielectric-semiconductor metasurface with high second-harmonic conversion efficiency and increased bandwidth.