多模半导体激光器电路模型

Circuit Model for Multi-Longitudinal-Mode Semiconductor Lasers

本文从多模半导体激光器速率方程出发，在假定光谱分布具有高斯形式的前提下，得到一个简单的多模半导体激光器电路模型，该模型对于进行光电集成回路计算机辅助分析尤为适用，可加入到现有电路模拟软件中，亦可在开发新软件中采用。作为模拟实例，用该模型模拟了一种双沟槽隐埋异质结（ＴＢＨ）结构激光器，模拟结果和已报导的实验结果很接近，并分析了该种激光器阈值电流和发射光谱对腔长的依赖关系。

From the multi-longitudinal-mode rate equations of semiconductor laser diode,based on the assumption that the spectrum as a function of wavelength is of Gauss's distribution shape,a simple circuit model for mulit-longitudinal-mode lasers is presented,This model is very suitable for the computer-aided analysis of OEIC.It can be introduced into the existing simulator and can be used to develop new simulator.By using this model,the DC,AC and transient characteristics of a TBH-LD are studied.The simulating results agree well with the reports.The dependence of threshold and mode spectra on the cavity length is also given.