arXiv 2305.024352023-05-03physics.optics

用于光纤放大器和激光器的Er/Yb增益介质基于实验的模型

Experiment-based model of Er/Yb gain medium for fiber amplifiers and lasers

D. K. Vysokikh, A. P. Bazakutsa, A. V. Dorofeenko, O. V. Butov

AI总结：

本研究构建了基于最少物理过程的Er³⁺/Yb³⁺共掺增益介质速率方程模型，得到能级布居与增益的解析解，经不同长度、泵浦功率的光纤放大器实验验证，还解析了铒离子布居反转瓶颈效应并求出全长度泵浦功率。

摘要：

本文研究了Er³⁺/Yb³⁺共掺玻璃增益介质的模型。构建了速率方程组，该方程组仅纳入描述实验数据所需的最少过程集合，因此使用的拟合参数数量适中，提升了模型的可靠性。研究得到了Er³⁺和Yb³⁺离子能级布居数的解析表达式，以及介质增益因子的解析表达式。通过在不同泵浦功率下对不同长度的Er³⁺/Yb³⁺光纤放大器进行的一系列增益测量，对该模型进行了验证。考虑到泵浦功率沿光纤的空间不均匀性，模型参数可与实验数据拟合。研究还解析表达了高泵浦功率下铒的最大布居数反转，该表达式描述了“瓶颈”效应，同时求出了沿光纤全长泵浦所需的功率。

英文摘要：

A model of an Er$^{3+}$/Yb$^{3+}$ co-doped glass gain medium is considered. The system of rate equations taking into account a minimum set of processes required to describe experimental data is built. As a result, a moderate number of fitting parameters is used, thereby increasing the model reliability. For the populations of the energy levels of Er$^{3+}$ and Yb$^{3+}$ ions, analytic expressions are obtained, as well as for the gain factor of the medium. The model was validated by a series of measurements of gain in Er$^{3+}$/Yb$^{3+}$ fiber amplifiers of different lengths at variable pump powers. The parameters of the model are found to fit the experimental data, taking into account the spatial inhomogeneity of the pump power along the fiber. The maximum population inversion of erbium at high pumping powers is analytically expressed, which describes the "bottleneck" effect. The power required to pump the fiber along the entire length is found.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

AI总结：

摘要：

英文摘要：

相关论文