Fig. 3: Multiphase-matched satellite combs at ≈1350 and 1900 nm under different pump conditions.
From: Coherent satellites in multispectral regenerative frequency microcombs
a, b Zoomed-out frequency comb spectra pumped at the same resonance mode with different detunings (Δ1 = 1581.70 nm and \(\Delta _1^\prime\) = 1581.88 nm; L-band), with coupled power of 30 dBm. Inset of (a), Pump-cavity transmission as a function of pump wavelength, illustrating the detunings where different satellite comb stages are generated. With more power loaded into the cavity, the intensity-weighed satellite centroid shifts by 1 or 2 cavity modes close to pump due to the increased nonlinear phase shift from higher intracavity power. c, d Zoom-in of the ≈1350 and 1900 nm satellite combs generated when pumped at different resonance modes in the L-band. The vertical axis is the pump wavelength and the horizontal axis is the satellite comb spectra. The comb mode numbers of the satellite centroid are labeled in each panel. Dispersive waves (DW) are observed when pump wavelength is larger than 1585 nm.
