Do In Hwan, Kim Dohyeong, Jeong Dongin, Suk Daewon, Kwon Dohyeon, Kim Jungwon, Lee Jae Hoon, Lee Hansuek
Opt Lett. 2021 Apr 1;46(7):1772-1775. doi: 10.1364/OL.419137.
Reducing the complexity required for starting and maintaining a soliton state has been a major task to fully miniaturize soliton microcombs including the accompanying external operating systems. Here we experimentally examine the generative process of a self-stabilized soliton in which a continuous-wave pump detuned on the thermally stable blue side of a resonance generates a Brillouin lasing signal that relays the pump power to the soliton pulses via intracavity mode-coupling without breaking thermal self-stability. Based on a simple setup consisting of a free-running laser and a microcavity without any external feedback systems by virtue of internal thermal locking, single-soliton pulses of 11 GHz repetition rate were deterministically generated. We demonstrate that the single-soliton pulses can be passively maintained over several days in a laboratory environment with a phase noise performance of -137/ at 100 kHz.
降低启动和维持孤子状态所需的复杂性一直是实现孤子微梳完全小型化（包括配套的外部操作系统）的一项主要任务。在此，我们通过实验研究了一种自稳定孤子的产生过程，其中在共振热稳定蓝侧失谐的连续波泵浦产生一个布里渊激光信号，该信号通过腔内模式耦合将泵浦功率传递给孤子脉冲，而不会破坏热自稳定性。基于一个简单的装置，该装置由一个自由运转的激光器和一个没有任何外部反馈系统的微腔组成，借助内部热锁定，确定性地产生了重复频率为11 GHz的单孤子脉冲。我们证明，在实验室环境中，单孤子脉冲可以在几天内被动维持，在100 kHz时的相位噪声性能为-137 dBc/Hz。
