InGaAsP/InP二维半导体光子晶体激光器的研究

InGaAsP/InP two dimentional photonic crystal laser

光子晶体具有调控光子的能力,而光子晶体激光器的实现则证实了这种调控能力。描述了基于InGaAsP/InP材料的二维半导体光子晶体激光器的研究,主要介绍了点缺陷型光子晶体微腔激光器的理论设计、模拟分析及与器件性能的比较。理论上采用平面波展开法和三维有限时域差分法,分析了通过采用调整点缺陷腔的最近临空气孔的尺寸,可以提高光学微腔的品质因子Q,从而提高激光器的工作性能,降低激光器的激射阈值,实验中研制了不同近邻孔径尺寸的激光器,观测到激光器激射阈值降低的现象,实验结果与理论模拟相一致,除此之外,还实现了光子晶体三角形腔和H2腔激光器的激射。

It is well known that photonic crystal possess the ability of manipulate photons.The realization of photonic crystal lasers is one of the best evidence of such ability.In this paper,we introduce the research on InGaAsP/InP two dimentional photonic crystal laser,which includes the design of photonic crystal microcavity,simulation and devices characterization.By mean of plane wave expansion and three dimentional finite differential time domain,we calculate the cavity Q factor with changing the innermost airholes.It is expected that the improvement of microcavity laser properties will be achieved with the Q factor increased.The experimental results are content to the theoretical one very well.Furthermore,we applied the deforming the lattice to fulfill single dipole mode laser.In this case,the splitting of two diple modes are theoretically estimated larger than 60 nm.