低折射率对比度下有机八重准周期光子晶体缺陷模的耦合特性  

Coupling Properties of Defect Modes in Organic Octagonal Quasiperiodic-Photonic-Crystals Under Low-Refractive-Index Contrast

作　　者：蔡园园 王智[1] 陈笑[2] 李长伟[2] 冯帅[2] 王义全[2] 

机构地区：[1]北京交通大学理学院,北京100044 [2]中央民族大学理学院,北京100081

出　　处：《光学学报》2018年第2期285-290,共6页Acta Optica Sinica

基　　金：国家自然科学基金(61675238;11374378;11204387);国家重大科研仪器研制项目(61627814)

摘　　要：基于有机半导体发光材料,研究了低折射率对比度下八重准晶结构中双缺陷微腔之间的缺陷模的耦合特性。研究结果表明,在八重准晶双9孔缺陷情况下,缺陷模不但发生了分裂,还出现了一个由双缺陷微腔与中间散射体所构建的复合腔新模式。在此基础上,利用缺陷模的三维场分布和模式之间的相位关系,揭示了模式耦合的物理机制,这为后续可见光波段有机半导体光子晶体器件的设计与制备提供了理论依据。The coupling properties of defect modes between the double-defect microcavities in the octagonal quasiphotonic-crystals are investigated under a low-refractive-index contrast based on the organic semiconductor luminescent materials.The study results show that,in the quasicrystal structure with double nine-air-hole-missing microcavities,it is observed that not only the modes split,but also a new mode in the composite cavity constructed by the double-defect microcavities and the intermediate scatterers.Based on this,by using the three-dimensional field distribution and the phase relationship among the defect modes,the physical mechanism of mode-coupling is disclosed.These results provides a theoretical foundation for the future design and fabrication of organic semiconductor photonic crystal devices in visible light band.

关 键 词：材料 准晶 缺陷模耦合 低折射率对比度 复合腔 

分 类 号：TN256[电子电信—物理电子学]