Second- and third-order nonlinearities in silicon nitride waveguides via heterogeneous integration of lithium niobate membranes

Natale G. Pruiti, Cosmin Suciu, Eugenio Di Gaetano +3

Thick, dispersion-engineered silicon nitride is a leading platform for integrated third-order nonlinear optics, supporting supercontinuum and frequency comb generation. However, it…