光学学报, 2019, 39 (10): 1005001, 网络出版: 2019-10-09
基于六方氮化硼材料的光栅型中红外线吸收器 下载: 925次
Grating-Type Mid-Infrared Absorber Based on Hexagonal Boron Nitride Material
图 & 表
图 2. h-BN的介电常数与波长的关系。(a)介电常数实部与波长的关系;(b)介电常数虚部与波长的关系
Fig. 2. Relationship between dielectric constant of h-BN and wavelength. (a) Relationship between real part of dielectric constant of h-BN and wavelength; (b) relationship between imaginary part of dielectric constant of h-BN and wavelength
图 3. 在采用优化结构参数的条件下,吸收器的吸收率相对于入射角度和波长的等高线图
Fig. 3. Contour map of absorption versus incident angle and wavelength under optimized structural parameters
图 4. TM波垂直入射时,不同入射波长对应的单元结构的磁场分布。(a) 6.5 μm;(b) 10.5 μm;(c) 12.5 μm;(d) 13.8 μm
Fig. 4. Magnetic field distributions of unit structure at different incident wavelengths under normal incidence of TM. (a) 6.5 μm; (b) 10.5 μm; (c) 12.5 μm; (d) 13.8 μm
表 1h-BN材料介电常数表达式中的参数
Table1. Parameters in the expression of dielectric constant of h-BN material
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陈岳飞, 薛文瑞, 赵晨, 张晨, 李昌勇. 基于六方氮化硼材料的光栅型中红外线吸收器[J]. 光学学报, 2019, 39(10): 1005001. Yuefei Chen, Wenrui Xue, Chen Zhao, Chen Zhang, Changyong Li. Grating-Type Mid-Infrared Absorber Based on Hexagonal Boron Nitride Material[J]. Acta Optica Sinica, 2019, 39(10): 1005001.