Slow Light Realization Based on Plasmon-Induced Transparency in Γ-Shaped Rectangular Resonator Structures

IF 3.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2023-09-07 DOI:10.1007/s11468-023-02032-3

Samira Taghizadehasl Foroughi, Reza Yadipour, Saeed Golmohammadi, Tofiq Nurmohammadi

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引用次数: 0

Abstract

In this study, Γ-shaped rectangular resonators, which are created in a metal insulator metal (MIM) structure, have been studied analytically and numerically. The metal is silver and rectangular resonators are filled by Si and the peak of transparency profile is tuned in the communication band with proper geometrical parameters. By employing 2-D finite difference time domain method (FDTD), simulations show a plasmonic induced transparency (PIT) window in the transmission diagram. The PIT is created by instructive and destructive interference between bright and dark resonator modes. The presented structure demonstrates tunable transparency window by variation of symmetry parameter, s. The maximum group velocity is obtained 0.1 ps in communication band corresponded to 30 μm traveling of light in the vacuum which is comparable to previous articles. The proposed structure may have potential applications in optical memory and delay blocks in designing integrated optical circuits.

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Γ形矩形谐振腔结构中基于等离子体诱导透明的慢光实现

本研究对金属绝缘体金属（MIM）结构中产生的 Γ 形矩形谐振器进行了分析和数值研究。金属是银，矩形谐振器由硅填充，并通过适当的几何参数在通信频带内调整透明度曲线的峰值。通过采用二维有限差分时域法（FDTD），模拟显示了传输图中的等离子体诱导透明（PIT）窗口。透明窗口是通过明暗谐振器模式之间的指示性和破坏性干扰产生的。所提出的结构通过对称参数 s 的变化展示了可调谐的透明窗口。在通信频段，最大群速度为 0.1 ps，相当于 30 μm 的真空光程，与之前的文章相当。所提出的结构有可能应用于光存储器和集成光路设计中的延迟块。

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

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.