Planar infrared double-layer black phosphorus tunable filter independent of polarization and with low angle of incidence dependence

IF 2.5 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-02-01 DOI:10.1016/j.photonics.2025.101356

Victor Dmitriev , Cristiano Oliveira , Gildenilson Duarte

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Abstract

The anisotropic properties of monolayer black phosphorus (BP) allow the creation of plasmonic devices with directional-dependent properties. In this work, we propose an electromagnetic component based on BP for the THz and infrared regions, which is independent of polarization. The proposed device presents a periodic structure with a unit cell that consists of two square coupled BP layers with a thin dielectric sheet of h-BN between them. The two squares are rotated by 90^∘ with respect to each other. Such a structure provides a transmittance curve with one dipole resonant frequency regardless of the incident wave polarization. It is also characterized by a low dependence on the angle of incidence. The results are obtained by finite-element electromagnetic simulations and temporal coupled-mode theory. The suggested BP metasurface can be used as a dynamically tunable filter, switch, modulator, and sensor at frequencies much higher than those of the corresponding graphene structures.

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平面红外双层黑磷可调谐滤光片不依赖偏振，低入射角依赖性

单层黑磷（BP）的各向异性特性允许创建具有方向依赖特性的等离子体器件。在这项工作中，我们提出了一种基于BP的太赫兹和红外区域的电磁元件，它与极化无关。所提出的器件具有周期结构，其单元电池由两个方形耦合BP层组成，层之间有薄的h-BN介电片。两个广场相对于对方旋转90°。这种结构提供了与入射波偏振无关的具有一个偶极子谐振频率的透射率曲线。它还具有对入射角依赖性低的特点。结果通过有限元电磁仿真和时间耦合模理论得到。所提出的BP超表面可以用作动态可调滤波器、开关、调制器和传感器，其频率远高于相应的石墨烯结构。

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

Photonics and Nanostructures-Fundamentals and Applications 工程技术-材料科学：综合

CiteScore

5.00

自引率

3.70%

发文量

审稿时长

62 days

期刊介绍： This journal establishes a dedicated channel for physicists, material scientists, chemists, engineers and computer scientists who are interested in photonics and nanostructures, and especially in research related to photonic crystals, photonic band gaps and metamaterials. The Journal sheds light on the latest developments in this growing field of science that will see the emergence of faster telecommunications and ultimately computers that use light instead of electrons to connect components.