中长波红外双波段全向反射镜的设计  

Design on a Dual-band Omnidirectional Reflector of MWIR and LWIR

作　　者：赵大鹏[1] 时家明[1] 汪家春[1] 袁忠才[1] 刘必鎏[1] 

机构地区：[1]电子工程学院安徽省红外与低温等离子体重点实验室,安徽合肥230037

出　　处：《激光与红外》2008年第5期454-457,共4页Laser & Infrared

基　　金：安徽省重点实验室基金项目(No.2007A005005E)资助

摘　　要：研究了异质结构一维光子晶体全向反射镜的设计方法。通过分析光子晶体的晶格常数、折射比和填充比,选择碲和聚乙烯设计了中红外和远红外双波段全向反射镜。结果表明采用异质结构的光子晶体能够同时在3.4～5.4μm和8～12.5μm实现全向反射（反射率大于99%）,相对带宽分别达到了49.8%和43.1%。An omnidirectional reflector based on 1D photonic crystal of heterostructures is introduced.The lattice constant,refraction ratio and filling factor are analyzed firstly.Then a dual-band omnidirectional reflector of MWIR and LWIR is designed using Te and polyethylene.The result shows that the photonic crystal based on heterostructures can achieve omnidirectional reflection in 3.4～5.4μm and 8～12.5 μm band in the mean while,whose bandwidth can reach 49.8% and 43.1% respectively.

关 键 词：全向反射镜 光子晶体 异质结构 中远红外 

分 类 号：TN214[电子电信—物理电子学]