Holmium-doped Fibers for Efficient Fiber Lasers at 2100 Nm

Michal Kamrádek,Jan Aubrecht,Michal Jelínek,Milan Frank,Pavel Peterka,Pavel Honzátko,Jan Mrázek,Petr Vařák,Ondřej Podrazký,Filip Todorov,Václav Kubeček,Ivan Kašík

OSA High-brightness Sources and Light-driven Interactions Congress 2020 (EUVXRAY, HILAS, MICS)（2020）

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摘要

Holmium-doped fibers with a low laser threshold and a slope efficiency exceeding 80% prepared by a nanoparticle-doping method are demonstrated. We proved the key factor for efficient holmium lasers is a ratio of Al/Ho greater than 60.

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