Abstract
In this paper, we experimentally investigate the onset dynamics of harmonic mode-locking (HML) in a short-cavity all-polarization-maintaining fiber laser using time-stretch spectroscopy. We observe a transient multi-pulse state evolving into a stable HML state. Moreover, a bunch of metastable short-lived mode-locking states are recorded before the laser entered the HML state. In these transient states, sudden changes including the formation and destruction of single broadband pulses are observed.
| Original language | English |
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| Pages (from-to) | 28808-28815 |
| Number of pages | 8 |
| Journal | Optics Express |
| Volume | 27 |
| Issue number | 20 |
| DOIs | |
| State | Published - 30 Sep 2019 |