“…[1], and have already found a wide range of applications in optical pumping, frequency conversion, optical communications, fiber sensing, biology, and supercontinuum generation [2][3][4][5][6][7][8]. Up to date, the investigation into RFLs has covered many areas, including power scaling [9,10], linewidth narrowing [11,12], temporal characteristics [13,14], polarization state [15], and working wavelength expansion [16,17], among which the temporal stability is an important aspect that affects the performance of RFLs.…”