Stabilization of passive harmonic mode locking in a fiber ring laser

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...

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Veröffentlicht in:Optics letters 2020-01, Vol.45 (1), p.184
Hauptverfasser: Gumenyuk, R. V., Korobko, D. A., Zolotovskii, I. O.
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.45.000184