Modeling and optimization of actively Q-switched 2.8 μm Er~(3+)-doped ZBLAN fiber laser

摘要

A theoretical model based on rate equations for actively Q-switched Er~(3+)-doped ZBLAN fiber laser is built. Theoperation behaviors and output characteristics of the actively Q-switched fiber laser at 2.8 μm are analyzed. Effects ofsome important laser parameters, such as pump power levels, reflectivity of the laser output coupler, fiber lengths, Erconcentrations, etc., on laser output were investigated. The model and simulating results are useful for design andoptimization of actively Q-switched fiber laser at 2.8-μm region.