Theory and Experiment Study on Self-Mixing Interference with Multiple External Reflectors
Theory and Experiment Study on Self-Mixing Interference with Multiple External Reflectors
复制标题
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Lu Min
中科院分区：
文献类型：
--
作者：
Lu Min
本文分析了多外反射镜半导体激光器的自混合干涉效应，提出了基于激光器复合腔效应的分析方法。每个外腔都被看作是一层光学薄膜，其反射率可以从薄膜光学理论中得到。推导了复合腔阈值增益和阈值频率的一般表达式，并对不同条件下的阈值增益和阈值频率进行了模拟分析。建立了一个多外反射镜自混合干涉实验系统。并给出了部分实验结果。通过仿真和实验发现，多外反射镜自混合干涉系统的输出为正弦波或锯齿波，与三镜法布里-珀罗腔系统的输出类似。仿真和实验结果验证了该原理的有效性。该原理可用于光纤耦合自混合系统的分析，模拟结果与实验结果吻合较好。
This paper analyzes the self mixing interference effect in the laser diode (LD) with multiple external reflectors and presents the analysis based on the compound cavity effect in lasers. Each external cavity is considered to be an optical thin film, and the reflectance ratio can be get from the theory of the thin film optics. The general expression of the threshold gain and frequency in the compound laser cavity are deduced and some simulation analysis is made at different conditions. A self mixing interference experiment system is build with multiple external reflectors. And some experiment results are presented. It is found from the simulation and experiment that the output of the self mixing interference system with multiple external reflectors is sinusiodal or saw toothed waves which is similar with the three mirror Fabry Perot cavity system. The simulating and experimental results demonstrate the validity of the principle. This principle can be used to analyze the fiber coupled self mixing system and the simulation is accordant with experimental results.