激光与光电子学进展, 2020, 57 (3): 031601, 网络出版: 2020-02-17   

偏振无关高吸收效率宽吸收带宽超材料吸收器 下载: 1161次

Polarization Independent High Absorption Efficiency Wide Absorption Bandwidth Metamaterial Absorber
作者单位
1 衢州职业技术学院信息工程学院, 浙江 衢州 324000
2 北京工业大学光电子技术教育部重点实验室, 北京 100124
摘要
基于表面等离子体慢光波导原理,利用介质硅(介质层)和金属金(金属层)设计出在整个近红外波段有高吸收效率的超材料吸收器。经过模拟计算发现设计的超材料吸收器在金属层厚度和介质层厚度分别为0.04 μm和0.02 μm时光吸收带宽最大,且波导层宽度和吸收器层数对吸收带宽也有较大影响。在TM偏振态下,光入射角小于40°时,计算得出超材料吸收器在整个近红外波段可以保持90%以上的吸收效率,而且在垂直入射条件下对TE和TM偏振具有相同的吸收效率,这体现了设计的超材料吸收器具有偏振无关的特性。
Abstract
Based on the principle of surface plasmon slow optical waveguide, a metamaterial absorber with high absorption efficiency in the whole near infrared band is designed by using dielectric silicon (dielectric layer) and Au (metal layer). The simulation results show that the bandwidth of the absorber is the largest when the thicknesses of the metal layer and the dielectric layer are 0.04 μm and 0.02 μm, respectively. It is also found that the width of the waveguide layer and the number of absorber layers have great influence on the absorption bandwidth. Finally, it is calculated that the absorption efficiency of the metamaterial absorber can be maintained over 90% in the whole near infrared band when the incident angle of light is below 40° under TM polarization. Moreover, the absorption efficiency for TE and TM polarizations is equal at normal incidence, which shows that the metamaterial absorber designed in this paper is polarization independent.

王超素, 江达飞, 江孝伟. 偏振无关高吸收效率宽吸收带宽超材料吸收器[J]. 激光与光电子学进展, 2020, 57(3): 031601. Chaosu Wang, Dafei Jiang, Xiaowei Jiang. Polarization Independent High Absorption Efficiency Wide Absorption Bandwidth Metamaterial Absorber[J]. Laser & Optoelectronics Progress, 2020, 57(3): 031601.

本文已被 6 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!