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平面波展开法计算FCC反相密堆积结构光子晶体的完全禁带
引用本文:刘艳,万勇,李洪亮,赵修松,夏临华. 平面波展开法计算FCC反相密堆积结构光子晶体的完全禁带[J]. 青岛大学学报(自然科学版), 2009, 22(4): 41-44. DOI: 10.3969/j.issn.1006-1037.2009.04.011
作者姓名:刘艳  万勇  李洪亮  赵修松  夏临华
作者单位:青岛大学物理科学学院,山东,青岛,266071;青岛大学物理科学学院,山东,青岛,266071;青岛大学纤维材料与现代纺织国家重点实验室培育基地多功能材料研究所,山东,青岛,266071;青岛大学化学化工与环境学院,山东,青岛,266071;青岛大学纤维材料与现代纺织国家重点实验室培育基地多功能材料研究所,山东,青岛,266071
基金项目:国家自然科学资金项目,山东省自然科学基金项目 
摘    要:本文的目的是研究FCC反相密堆积结构光子晶体在改变其结构的情况下完全禁带的变化。通过事先设定品格常数a和组成密堆积结构的空气球的半径R,利用平面波展开法计算得到当背景材料的相对介电常数分别为εr=3.6和εr=11.9时两种不同的完全禁带。在此基础之上,又对晶体结构做了一些改动,保持a和R不变,在相邻球体的空隙中再嵌入4个半径r=0.2R的空气小球,结果发现当εr=3.6时完全禁带消失了,而εr=11.9时则产生了新的完全禁带。

关 键 词:光子晶体  平面波展开法  FCC反相密堆积结构  完全禁带

Absolute Bandgaps of Photonic Crystal in FCC Opposite Phase Close Structure Calculated by Plane-Wave Expansion Method
LIU Yan,WAN Yong,LI Hong-liang,Zhao Xiu-song,XIA Lin-hua. Absolute Bandgaps of Photonic Crystal in FCC Opposite Phase Close Structure Calculated by Plane-Wave Expansion Method[J]. Journal of Qingdao University(Natural Science Edition), 2009, 22(4): 41-44. DOI: 10.3969/j.issn.1006-1037.2009.04.011
Authors:LIU Yan  WAN Yong  LI Hong-liang  Zhao Xiu-song  XIA Lin-hua
Affiliation:LIU Yan, WAN Yong, LI Hong-liang, Zhao Xiu-song, XIA Lin-hua (1. College of Physics Science; 2. Institute of Multifunctional Materials, laboratory of New Fiber Materials and Modern Textile,the Growing Base for State Key Laboratory; 3. College of Chemistry, Chemical engineering and environment, Qingdao University, Qingdao 266071 China)
Abstract:Plane-wave expansion method was used to calculate absolute bandgaps of photonic crystal with FCC opposite-phase close packing structure. By setting up lattice constant(a) and the radius(R)of air balls with close packing structure, two different absolute bandgaps were calculated when εr= 3. 6 and εr= 11.9. When crystal structure was altered by embedding four air bails whose radius were 0. 2R into the interspaces of adjacent spheres and a and R kept unchanged at same time, it can be found that absolute bandgap disappeared at εr=3.6 and a new absolute bandgap formed at εr=11.9.
Keywords:photonic crystal  plane-wave expansion method  FCC opposite-phase close packing structure  absolute bandgap
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