Single solitons and intermode breathing solitons in MgF2 microresonators

Intermode breathers can be triggered by the avoided mode crossings in microresonators. Here, we numerically and experimentally explore the breather and single soliton regimes as the pump-power and pump-cavity detuning vary. Below a pump-power threshold, a single soliton regime is obtained within a detuning range. Above this threshold, an intermode breather section emerges, resulting in a soliton-breather-soliton pattern in which the system transits from a stable soliton to a breathing soliton and back to a stable soliton as the detuning increases.