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.
出处
《激光与红外》
CAS
CSCD
北大核心
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
关键词
全向反射镜
光子晶体
异质结构
中远红外
omnidirectional reflector
photonic crystal
heterostructure
MWIR and LWIR
