论文标题
通过光栅曲线设计，在外上ercy恢复基于GAAS的光子晶体表面发射激光器中的空隙工程
Void Engineering in Epitaxially Regrown GaAs-Based Photonic Crystal Surface Emitting Lasers by Grating Profile Design
论文作者
论文摘要
我们报告了嵌入基于GAAS的光子晶体表面发射激光器中的空气 - 通过金属有机蒸气相位外观再生再生的激光。通过在重新生长之前修改反应器内的光子晶体光栅曲线来获得两个不同的空隙几何形状。通过扫描透射电子显微镜分析，通过使用Alas/GAAS超晶格结构的使用，通过扫描透射电子显微镜分析来推断空隙形成的机理。利用（100）表面的快速横向生长与较高指数平面的缓慢扩散之间的竞争是为了增加空隙体积，从而导致阈值电流的数量级降低，并通过增加相关的光栅耦合强度的增加而增加了输出功率。
We report the engineering of air-voids embedded in GaAs-based photonic crystal surface emitting lasers realised by metalorganic vapour-phase epitaxy regrowth. Two distinct void geometries are obtained by modifying the photonic crystal grating profile within the reactor prior to regrowth. The mechanism of void formation is inferred from scanning transmission electron microscopy analysis, with the evolution of the growth front illustrated though the use of an AlAs/GaAs superlattice structure. Competition between rapid lateral growth of the (100) surface and slow diffusion across higher index planes is exploited in order to increase void volume, leading to an order of magnitude reduction in threshold current and an increase in output power through an increase in the associated grating coupling strength.
