Publications

All-Dielectric Intersubband Polaritonic Metasurface with Giant Second-Order Nonlinear Response

Sarma, Raktim; Xu, Jiaming; De Ceglia, Domenico; Nookala, Nishant; Carletti, Luca; Campione, Salvatore; Klem, John; Gennaro, Sylvain D.; Sinclair, Michael B.; Belkin, Mikhail A.; Brener, Igal

We demonstrate an extremely nonlinear all-dielectric metasurface that employs intersubband polaritons to achieve a second-harmonic conversion coefficient of 3 mW/W2, and second-harmonic power conversion efficiency of 0.045% at a modest pump intensity of 6.7 kW/cm2.