为了研究垂直耦合腔面发射激光器(CC－VCSELs)阈值特性，利用传输矩阵法计算了其阈值载流子浓度，在此基础上结合载流子速率方程讨论了阈值电流，得到了CC－VCSELs的双阈值点(1mA，0．75mA)与阈值电流关系曲线。数值计算结果比较表明，利用传输矩阵与载流子速率方程相结合的方法研究CC－VCSELs的阈值特性优于速率方程法，且数值计算结果与实验结果相吻合。

In order to study the threshold characteristics of coupled-cavity vertical-cavity surface emitting lasers(CCVCSELs),the threshold carrier density of CC-VCSELs was calculated based on transfer matrix method. Then the threshold current was discussed with the carrier rate equation based on threshold carrier density. The curve of “Double Threshold” point(1mA,0.75mA)and threshold currents curve was obtained. Numerical calculated shows that the results obtained by transfer matrix and carrier rate equation are better than those obtained by rate equation,and the calculation result agreed with the experiment.