Photo-induced cascaded harmonic and comb generation in silicon nitride microresonators

Jianqi Hu, Edgars Nitiss, Jijun He +5

Silicon nitride (Si${}_3$N${}_4$) is an ever-maturing integrated platform for nonlinear optics. Yet, due to the absence of second-order (${\chi }^{(2)}$) nonlinearity, Si${}_3$N${}_4$ is mostly…