依据腔量子电动力学中自发辐射增强效应，分析了垂直腔面发射半导体激光器的微腔效应，比较了普通开腔和三维封闭腔中的结果。从理论上......

Recent examples of periodic bifurcations in descendant trees of finite p-groups with ?are used to show that the possible......