连续掺镱光纤放大器的提取效率

连续光纤激光器在加工及军事等领域都有重要应用。为了研究掺镱光纤放大器中影响提取效率的关键因素,在稳态激光速率方程基础上,考虑光纤放大器中自发辐射放大,建立了高功率光纤放大器的数值模型,并分析提取效率与光纤端面反射率,信号光功率以及抽运光功率之间的关系。采用反向抽运光纤放大器的实验方案,对有关提取效率的理论分析进行了初步验证。理论计算结果与实验验证结果的偏差小于10%。研究结果定性地描述了光纤端面反射率、信号光的功率和抽运光的功率对光纤放大器提取效率的影响。

Extraction Efficiency in Continuous-Wave Ytterbium-Doped Fiber Amplifier

Continuous-wave fiber amplifier plays an important role in the field of manufacture and military.In order to investigate the critical factors that modify the extraction efficiency of continuous-wave ytterbium-doped fiber amplifier,this paper describes a model of a fiber amplifier incorporating amplified spontaneous emission(ASE)based on the steady-state rate equations.The relationships between extraction efficiency and the reflectivity of fiber ends,signal power,pump power are researched.The model by comparing predictions with experimental results obtained from backward pump fiber amplifier was tested.Deviation of these two results is less than 10%.The results show that how the extraction efficiency of fiber amplifier is impacted by those factors and these influences could be beneficial to the design and application of continuous-wave high power fiber amplifier.