Simulation of Nonlinear Processes in High-Q Microresonators in the Self-Injection Locking Regime with Account of Thermal Effects

The thermal effects appearing inevitably when laser radiation propagates through high-Q optical microresonators lead to various drifts, fluctuations and unstable regimes. In particular, thermal effects can affect strongly the generation of optical frequency combs and dissipative soliton structures. A way to offset the thermal effects is to use the self-injection effect that locks the laser radiation frequency to the eigenfrequency of the microresonator. In this work we consider the principles and dynamics of the self-injection locking effect at high pump powers in the nonlinear regimes, including those induced by thermal nonlinearity.