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Cascaded Second Order Optical Nonlinearities in a Dielectric Metasurface

Gennaro, Sylvain D.; Doiron, Chloe F.; Karl, Nicholas J.; Padmanabha Iyer, Prasad P.; Sinclair, Michael B.; Brener, Igal B.

In this work, we analyze the second and third harmonic signal from a dielectric metasurface in conjunction with polarization selection rules to unambiguously demonstrate the occurrence of cascaded second-order nonlinearities.