摘要
对单横模激射的光子晶体垂直腔面发射激光器的设计具有指导作用。把单横模光子晶体光纤理论用于光子晶体微腔,分析有效归一化频率随晶格常数和填充比的变化关系;采用时域有限差分方法计算二维空气孔型三角结构光子晶体的完全带隙。利用上述计算结果,选取合适的光子晶体结构参数,实现单横模激射。从载流子数面密度和光子数面密度的速率方程出发,分析了光子晶体的引入对激光阈值的影响。
This paper is helpful to the design of photonic-crystal Vertical-Cavity Surface-Emitting lasers which emit single transverse mode. We use the theory of the single transverse mode of photonic crystal fiber in the analysis of the normalized frequency varying with the change of the lattice constant and the value of r/a. We calculate the band-gap of the two-dimensional air holes photonie erystal with triangular structure by the finite-difference time-domain method. In order to achieve single-transverse mode lasing, we use the calculation results to select the appropriate parameters of the photonic crystal structure. We use the rate equations of the carrier surface density and photon number surface density to analyze the influence of each photonie crystal structure parameters.
出处
《激光与红外》
CAS
CSCD
北大核心
2012年第11期1278-1281,共4页
Laser & Infrared
基金
国家自然科学基金项目(No.11104251)
河南省高校青年骨干教师资助计划基金项目(No.2009GGJS-012)资助
关键词
光子晶体
垂直腔面发射激光器
单横模
阈值
photonic crystal
vertical-cavity surface-emitting laser
single transverse mode
laser threshold
