分布反射面发射垂直微腔半导体激光器的微腔效应

ON MICROCAVITY EFFECT IN VERTICAL CAVITY SURFACE EMITTING QUANTUM WELL LASER WITH MULTILAYER HETEROSTRUCTURE REFLECTORS

从理论上分析了作为垂直腔面发射半导体激光器反馈面的异质多层结构对光腔中激光传输振荡过程的影响．指出其相位匹配和等效反射面位置对改善激光器性能的重要作用．说明目前这种被认为很有希望的微腔结构，实际上难以观察到微腔效应的物理根源，并指出其改进的途径．

Effects of the multilayer heterostructures as the feedback end facets and quantum well structure as the active medium on the lasing behavior in the vertical cavity surface emitting laser (VCSEL) have been analyzed theoretically and systematically. It is shown that the degree of phase matching and the effective length of the distributed reflector have prominent effects on the laser characteristics, and the available low threshold VCSEL may not be due to the microcavity effect. The possible ways to improve the design and the device characteristics have been proposed, both for low threshold and simplified device technology, and for satisfying the condition of microcavity effect in VCSEL.