We have demonstrated an efficient 1720-nm all-fiber laser with ring-cavity configuration based on commercial Tmdoped silica fiber and 1570-nm in-band pump source. The rate equation model was built up to analyze the laser performance of Tm-doped fiber, which exhibits strong absorption in 1.7-μm region. The results show that efficient laser operation can be achieved through the optimization of output coupling and the length of Tm-doped fiber. By using homemade couplers, we experimentally achieved 2.36-W laser output power under 6-W launched pump power. The slope efficiency with respect to the absorbed pump power and optical efficiency were 50.2% and 39.3%, respectively. Due to the employment of ring resonator, a narrow laser linewidth of ~4 GHz at maximum output power was observed.


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    Titel :

    A 1720-nm ring-cavity Tm-doped fiber laser with optimized output coupling


    Beteiligte:
    Zhang, Lu (Autor:in) / Zhang, Junxiang (Autor:in) / Sheng, Quan (Autor:in) / Sun, Shuai (Autor:in) / Shi, Chaodu (Autor:in) / Fu, Shijie (Autor:in) / Bai, Xiaolei (Autor:in) / Shi, Wei (Autor:in) / Yao, Jianquan (Autor:in)

    Kongress:

    Fiber Lasers XVIII: Technology and Systems ; 2021 ; Online Only,California,United States


    Erschienen in:

    Proc. SPIE ; 11665


    Erscheinungsdatum :

    2021-03-05





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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