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Generation and evolution dynamics of gain-guided dissipative solitons in a Tm-doped fiber laser

Author

Listed:
  • Zheng, Jiancheng
  • Yang, Song
  • Liu, Qingqing
  • He, Chaojian
  • Liu, Chibiao
  • He, Lihong
  • Qi, Yaoyao
  • Lin, Xuechun

Abstract

The generation of dissipative solitons from a mode-locked fiber laser can enhance emission energy, while the insertion of a bandwidth filter exposes the system to complexity. This study presents the first generation and evolution dynamics of gain-guided dissipative solitons (GGDSs) in Tm-doped fiber lasers exploiting the finite gain bandwidth. The results highlight the intricate interplay of finite gain bandwidth with dispersion and nonlinearity in governing the dynamics of GGDSs. An increase in pump power significantly broadens the emission spectrum, which in turn introduces the finite gain bandwidth to the generation of GGDSs. Consequently, linear chirp accumulates, promoting high-energy ultrashort pulse generation after external compression. However, an increase in round-trip group delay dispersion leads to a narrower spectral bandwidth, which can weaken the influence of the finite gain bandwidth, resulting in decreased soliton energy and broader pulse duration. The investigation of GGDS evolution dynamics within the cavity also provides us with a deeper insight into the characteristics of GGDS. Overall, this research offers important guidance for designing high-performance Tm-doped fiber lasers with simple structures that fully exploit the finite gain bandwidth.

Suggested Citation

  • Zheng, Jiancheng & Yang, Song & Liu, Qingqing & He, Chaojian & Liu, Chibiao & He, Lihong & Qi, Yaoyao & Lin, Xuechun, 2024. "Generation and evolution dynamics of gain-guided dissipative solitons in a Tm-doped fiber laser," Chaos, Solitons & Fractals, Elsevier, vol. 187(C).
    • Handle: RePEc:eee:chsofr:v:187:y:2024:i:c:s0960077924009378
    DOI: 10.1016/j.chaos.2024.115385
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