圆柱形Bragg微腔的共振模特性  

Resonance Model of Cylindrical Bragg Microcavity

作　　者：张艳[1] 金子涵 侯丽丽[1] 陈宪锋[1] 王帅[1] 

机构地区：[1]常州大学信息数理学院,江苏常州213164

出　　处：《量子光学学报》2015年第2期177-182,共6页Journal of Quantum Optics

基　　金：国家自然科学基金(Grant No.61107055)

摘　　要：利用圆柱形介质设计了一个Bragg微腔结构,含有圆柱形和环形两个微腔。基于传输矩阵理论,通过研究会聚柱面波的反射相移,根据反射相移在Bragg禁带中的尖锐突变来确定微腔结构的共振模。较之其他计算方法,相移方法操作简单,图像直观,且行之有效。研究表明,随着中心圆柱形微腔的半径增大,方位指数相同的两微腔共振模之间会发生相互作用,在腔模光子能量相近时耦合效应最强,导致双微腔的耦合共振模曲线出现反交叉现象。最后给出了耦合共振模的空间电磁场分布。A Bragg microcavity structure was designed by the cylindrical medium, which contained twomicrocavities about cylindrical and ring. Based on the transmission matrix theory, through studying thereflection-induced retardance of convergent cylindrical wave, resonant mode of microcavity structure wasdetermined according to the sharp mutation of reflection-induced retardance in Bragg forbidden band.Compared with other calculation methods, phase shift method was simple, visual and effective. Studies haveshown that as the radius of the central cylindrical microcavity increased, the two mierocavity resonantmodes with same azimuth index occured interaction, and when the photon energy of cavity mode wassimilar,the coupling effect was the strongest, which resulted in anti-intersection phenomenon of dualmicrocavity coupling resonant mode curves. Finally, the spread of electric magnetic fields in space about thecoupling resonant mode was given.

关 键 词：相移 传输矩阵 Bragg微腔 共振模 Hankel函数 

分 类 号：O431.2[机械工程—光学工程]