为了设计和优化高速激光二极管的高频特性, 其速率方程模型参量的精确提取方法非常重要.本文针对新型长波长高带宽的掩埋隧道结垂直面激光器, 给出一种速率方程模型参量提取方法.此方法是主要基于阈值电流、输出光功率、张弛振荡频率、阻尼因子和高偏置下增益压缩因子非线性效应等因素, 根据已测量的不同偏置下芯片的小信号频率响应来拟合出方程中的张弛振荡频率和阻尼因子.通过考虑增益压缩因子, 分别非线性拟合已提取的偏置光功率下的张弛振荡频率和阻尼因子, 即可提取速率方程模型中的参量.

In order to design and optimize high frequency performances of laser diodes, accurate extraction methods for the rate equation parameters are very important. A method for the rate equation parameter extraction for long-wavelength and high-bandwidth buried tunnel junction vertical-cavity surface-emitting lasers is presented. This method bases on the threshold current, output power, resonance frequency, damping factor and nonlinear effect of the gain compression factor under high bias currents. By fitting the chip frequency responses with different bias currents, resonance frequency and damping factor values can be obtained. Finally, by considering gain compression factor and nonlinear fitting resonance frequency and damping factor values under different currents, parameters of rate equation model can be extracted.