摘要
研究了一维光子晶体的全方向反射镜。用传输矩阵法分析了影响全反镜全方向反射带带宽和位置的因素。利用带隙展宽理论,构建异质结构光子晶体,设计得到了近红外宽带全反射镜。比较发现,Te/SiO2构成的一维异质结构全向带反射特性优于TiO2/SiO2构成的一维异质结构,该反射镜TE偏振波的全方向反射带分布在近红外波段1001-2999 nm范围内,TM偏振波的全向反射带分布在1001-2323 nm波段范围内,获得的反射率高于98%,而薄膜层数只需要20层。
The omnidirectional reflectors based on one-dimensional photonic crystals were investigated.The effects on band-position and band-width of the omnidirectional reflection（ODR） band were analyzed by transmission matrix method. Based on the wide band gap theory, a near-infrared broadband omnidirectional reflector was designed with heterostructure photonic crystals. Compared heterostructures composed of Te /SiO2 with TiO2/SiO2,it is found that ODR band characteristics of the former is superior to the latter. The ODR band of TE polarized wave located in the near-infrared range of 1001-2999 nm;the ODR band of TM polarized wave located in the near-infrared range of 1001-2323 nm,and reflection rate obtained is more than 98%,while the number of the layers is just 20.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2015年第1期221-226,共6页
Journal of Synthetic Crystals
基金
四川省科技厅资助项目(2014ZR0044)
四川省教育厅资助项目(13Z200)
关键词
光子晶体
全方向反射
异质结构
近红外宽带
photonic crystal
omnidirectional reflection
heterostructure
near-infrared broadband
