光学学报, 2018, 38 (9): 0922001, 网络出版: 2019-05-09
基于异质结构的一维光子晶体红外3~5 μm高反射镜设计 下载: 1073次
High Reflector Designed with One-Dimensional Photonic Crystal in 3-5 μm Infrared Region Based on Hetero-Structure
光学设计 高反射镜 光子晶体 λ/4介质膜系; 异质结构 金属增强型光子晶体 optical design high reflector photonic crystal λ/4 dielectric film system; hetero-structure metal enhanced
摘要
研究了具有异质结构且适用于3~5 μm红外光区的一维光子晶体高反射镜,系统地分析了光波在一维周期性光子晶体中的反射特性,通过传输矩阵计算和仿真验证了λ /4介质膜系的反射率和最佳禁带宽度。在此基础上,选取Si和Y2O3两种材料,构造了24层一维光子晶体的双异质结构,仿真结果表明:在3~5 μm红外波段,该结构的反射率为97.418%~99.999%。为了减少膜层数量,以金属银为衬底,设计了以Si和Y2O3为介质层结构的一维金属增强型光子晶体,其总层数为9层,仿真结果表明:在3~5 μm红外波段,其反射率为98.943%~99.979%。
Abstract
In this paper, a high reflector based on one-dimensional photonic crystal of hetero-structure in infrared region(3-5 μm) is investigated. The reflection characteristics of light wave in one-dimensional periodic photonic crystals are systematically analyzed. The reflectivity and the optimal forbidden band width of the λ/4 dielectric film system are verified by transfer matrix theory calculation and simulation. On this basis, Si and Y2O3 are selected to construct the one-dimensional photonic crystal of double hetero-structure with 24 layers. The simulation result shows that the reflectivity in infrared region (3-5 μm) is between 97.418% and 99.999%. In order to reduce the number of the film layers, using metal silver as an substrate, we design the dielectric layer structure of Si and Y2O3 with 9 layers of one-dimensional metal enhanced photonic crystal. The simulation result shows that the reflectivity is between 98.943% and 99.979% in the infrared band of 3-5 μm.
李康文, 李享成, 陈平安, 程用志, 朱伯铨. 基于异质结构的一维光子晶体红外3~5 μm高反射镜设计[J]. 光学学报, 2018, 38(9): 0922001. Kangwen Li, Xiangcheng Li, Ping'an Chen, Yongzhi Cheng, Boquan Zhu. High Reflector Designed with One-Dimensional Photonic Crystal in 3-5 μm Infrared Region Based on Hetero-Structure[J]. Acta Optica Sinica, 2018, 38(9): 0922001.