Stabilization of passive harmonic mode locking in a fiber ring laser
Research output: Contribution to journal › Article › Scientific › peer-review
|Number of pages||4|
|Publication status||E-pub ahead of print - 23 Dec 2019|
|Publication type||A1 Journal article-refereed|
We propose the model of a harmonically mode-locked soliton fiber ring laser based on the nonlinear polarization rotation taking into account the gain depletion and recovery effects. It is shown that a specific timing jitter could arise in such lasers, since the pulses in the cavity are not strongly identical. To suppress the jitter and stabilize the harmonic mode-locking operation, a method using a small frequency shift followed by the laser radiation filtering is described. The performed numerical simulation shows that the proposed method is able to provide extremely stable harmonic mode locking in a soliton fiber ring laser.