Fig. 4: Optimization of a nanophotonic resonator.

The optimized nanophotonic resonator with a sketch of the electric field intensity \(|{\tilde{{{{{{{{\bf{E}}}}}}}}}}|^{2}\) corresponding to the high-Q resonance is shown. The high-Q resonance has a Q-factor of Q = 292. The materials of the nanoresonator are the same as for the reference structure in Fig. 2a.