Mas Arabí Carlos, Englebert Nicolas, Parra-Rivas Pedro, Gorza Simon-Pierre, Leo François
Opt Lett. 2022 Jul 15;47(14):3527-3530. doi: 10.1364/OL.463061.
Mode-locking is a broad concept that encompasses different processes enabling short optical pulse formation in lasers. It typically requires an intracavity mechanism that discriminates between single and collective mode lasing, which can be complex and sometimes adds noise. Moreover, known mode-locking schemes do not guarantee phase stability of the carrier wave. Here, we theoretically propose that injecting a detuned signal seamlessly leads to mode-locking in fiber lasers. We show that phase-locked pulses, akin to cavity solitons, exist in a wide range of parameters. In that regime the laser behaves as a passive resonator due to the non-instantaneous gain saturation.
锁模是一个广义概念，它涵盖了在激光器中产生短光脉冲的不同过程。它通常需要一种腔内机制来区分单模和集体模激光，这可能很复杂，有时还会增加噪声。此外，已知的锁模方案不能保证载波的相位稳定性。在此，我们从理论上提出，注入失谐信号能无缝地实现光纤激光器的锁模。我们表明，类似于腔孤子的锁相脉冲存在于很宽的参数范围内。在该区域，由于增益饱和非瞬时性，激光器表现为一个无源谐振器。
