Near- and Mid- Infrared Quintuple-Band Plasmonic Metamaterial Absorber

IF 3.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL Plasmonics Pub Date : 2023-05-18 DOI:10.1007/s11468-023-01881-2

Chung-Ting Chou Chao, Sy-Hann Chen, Hung Ji Huang, Yuan-Fong Chou Chau

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引用次数: 1

Abstract

In nanophotonic devices, the absorption of electromagnetic waves plays a critical role. Attempting to achieve narrowband absorption with multiple operating wavelengths, particularly in the near- and mid-infrared regions, is still a challenging endeavor. In this study, we developed a plasmonic metamaterial absorber (PMA) with a quintuple-band design. This PMA uses a periodic structure consisting of a dielectric layer sandwiched between a metallic nanobar array and a thin Ag film. The PMA can operate in both the near-infrared and mid-infrared regions. The absorptance of the proposed PMA for modes 1–5 is 98.02%, 99.47% 98.02%, 99.47%, and 96.09%, respectively. The high absorptance is due to hybridization of localized gap, cavity and surface plasmon resonance. This phenomenon can be explained by an inductance and capacitance circuit model. We also investigated the effects of structure parameters on the absorptance spectrum, which will provide valuable guidance for designing high-performance PMA.

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近红外和中红外五波段等离子体超材料吸收器

在纳米光子器件中，电磁波的吸收起着至关重要的作用。尝试实现多种工作波长的窄带吸收，特别是在近红外和中红外区域，仍然是一个具有挑战性的努力。在这项研究中，我们开发了一种具有五波段设计的等离子体超材料吸收器(PMA)。这种PMA采用了一种周期性结构，由夹在金属纳米棒阵列和银薄膜之间的介电层组成。PMA可以在近红外和中红外区域工作。所提出的PMA对1 ~ 5模态的吸光度分别为98.02%、99.47%、99.02%、99.47%和96.09%。高吸收率是由于局域间隙、腔和表面等离子体共振的杂化作用。这种现象可以用电感和电容电路模型来解释。我们还研究了结构参数对吸光度的影响，为高性能PMA的设计提供了有价值的指导。

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来源期刊

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.