Polarization dependent high refractive index metamaterial with metallic dielectric grating structure in infrared band

IF 0.7 4区物理与天体物理 Q4 OPTICS

Optica Applicata Pub Date : 2022-01-01 DOI:10.37190/oa220310

Jianmin Li, Peng Chen, Bo Fang, Jinhui Cai, Le Zhang, Yinglai Wu, Xufeng Jing

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Abstract

According to the theory of high refractive index of metamaterials, a composite structure of metal dielectric grating was designed to achieve high refractive index in infrared band. Based on the S-parameter inversion algorithm, we extracted the effective permittivity, the effective permeability, and the effective refractive index of the designed metamaterial. By changing the geometric parameters of the composite grating metamaterial structure, the effective refractive index of the designed metamaterial reaches more than 8.0 at the infrared resonance frequency. This is a high refractive index that many natural materials cannot achieve. It is noteworthy that the metamaterial structure has obvious polarization sensitivity. The metamaterial structure has both high refractive index and wide-band zero refractive index properties when different polarized light is incident. At the same time, we further investigate the influence of metamaterial geometric parameters on the effective refractive index of metamaterials. Also, we propose a double grating metamaterial structure to obtain more degrees of freedom of metamaterial on the effective refractive index.

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红外波段具有金属介质光栅结构的偏振相关高折射率超材料

根据超材料的高折射率理论，设计了一种金属介质光栅复合结构，实现了红外波段的高折射率。基于s参数反演算法，提取了所设计超材料的有效介电常数、有效磁导率和有效折射率。通过改变复合光栅超材料结构的几何参数，所设计的超材料在红外共振频率处的有效折射率达到8.0以上。这是许多天然材料无法达到的高折射率。值得注意的是，该超材料结构具有明显的极化敏感性。该超材料结构在不同偏振光入射时具有高折射率和宽频带零折射率特性。同时，我们进一步研究了几何参数对超材料有效折射率的影响。此外，我们还提出了一种双光栅的超材料结构，以获得超材料在有效折射率上的更大自由度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optica Applicata 物理-光学

CiteScore

1.00

自引率

16.70%

发文量

审稿时长

4 months

期刊介绍： Acoustooptics, atmospheric and ocean optics, atomic and molecular optics, coherence and statistical optics, biooptics, colorimetry, diffraction and gratings, ellipsometry and polarimetry, fiber optics and optical communication, Fourier optics, holography, integrated optics, lasers and their applications, light detectors, light and electron beams, light sources, liquid crystals, medical optics, metamaterials, microoptics, nonlinear optics, optical and electron microscopy, optical computing, optical design and fabrication, optical imaging, optical instrumentation, optical materials, optical measurements, optical modulation, optical properties of solids and thin films, optical sensing, optical systems and their elements, optical trapping, optometry, photoelasticity, photonic crystals, photonic crystal fibers, photonic devices, physical optics, quantum optics, slow and fast light, spectroscopy, storage and processing of optical information, ultrafast optics.