纵向耦合对垂直腔面发射激光器的影响  

Longitudinal Coupling Effect on Vertical Cavity Surface Emitting Laser

作　　者：宋俊峰[1] 付艳萍[1] 李雪梅 刘杨[1] 常玉春[1] 杜国同[1] 

机构地区：[1]吉林大学电子工程系,集成光电子学国家重点联合实验室,长春130023

出　　处：《光学学报》2000年第6期739-743,共5页Acta Optica Sinica

基　　金：国家自然科学基金资助项目!(698962 60;697770 0 5)

摘　　要：考虑到垂直腔面发射激光器中的光子与载流子的纵向耦合 ,在行波速率方程中引入了纵向耦合因子。利用这个速率方程 ,讨论了阈值电流与量子阱数目的关系 ,计算结果表明光子与载流子的纵向耦合是不容忽视的。给出了阈值电流表达式 ,它表明纵向耦合因子越大 ,阈值电流越低。A longitudinal coupling factor is introduced into the rate equation of vertical cavity surface emitting lasers (VCSELs), taking the longitudinal coupling between photon and carrier into account. By using this modified equation, the relation between threshold current and number of quantun wells (QWs) is analyzed. The results show that the effect of longitudinal coupling between photon and carrier is not negligible. Furthermore, an expression for VCSEL′s threshold current J th  is given, which indicates that the bigger the longitudinal coupling factor is, the lower the threshold current is.

关 键 词：垂直腔面发射激光器 速率方程 阀值电流 

分 类 号：TN248[电子电信—物理电子学]