Optica Open
Browse
Flat-topped_solitons_OL_fin.pdf (616.23 kB)

Flat-topped optical spectrum as a specific marker of multi-pulse grouping in soliton fiber laser

Download (616.23 kB)
preprint
posted on 2024-07-10, 08:53 authored by Dmitry Korobko, Valeria Ribenek, Pavel Itrin, Andrei Fotiadi
We report the experimental observation of a stable generation regime in a soliton fiber laser, characterized by a distinct flat-topped optical spectrum. Notably, in multi-pulse generation, this specific spectrum shape prevents the harmonic mode-locking state, instead aligning the solitons into bound complexes or tight chaotic bunches. Physically, this suggests that in the observed regime, long-range attractive forces dominate over inter-pulse repulsion across the entire laser cavity. Our experimental findings align with numerical simulations, which demonstrate that the predominance of long-range inter-pulse attraction is due to a complex interaction mechanism. This mechanism combines the generation of dispersive waves with dissipative forces arising from gain depletion and recovery.

History

Funder Name

Russian Science Foundation (23-79-30017)

Preprint ID

115412

Usage metrics

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC