Fig. 2: Existence maps showing the conversion efficiency of a single DKS state.
From: Surpassing the nonlinear conversion efficiency of soliton microcombs
a, A resonance profile with a shifted centre resonance, showing the definition of comb detuning and pump detuning. The two detuning parameters become identical when no shift is applied. b, Map for an anomalous dispersion cavity without shift applied to the pump resonance. The areas confined by the dashed lines indicate the presence of CW bistability. The dotted areas indicate where combs could be initiated through modulational instability. The peak conversion efficiency is 8% at a point indicated by the light blue cross on the map. c, An existence map where the pump resonance has been shifted by five normalized units. The peak conversion efficiency is 80% at the point indicated by the light blue cross in the map.
