Wavelength splitting in coupled dissimilar disk resonators with nanoscatterers

IF 2.5 3区 物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-04-17 DOI:10.1016/j.photonics.2024.101263
Varun S.V., Shadak Aee K.
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Abstract

In this work, we present wavelength splitting characteristics of whispering gallery modes in a system where two disks with different refractive indices are coupled together. This study utilizes finite difference time domain based simulations. The spectral changes caused by the presence of nanoparticles are analyzed, taking factors such as the number of nanoparticles, their size and distance from the surface of the disks into account. The investigation also encompasses the interaction of a thin nanolayer. Our findings demonstrate that the wavelength splitting is highly influenced by the specific disk where the nanoparticle or nanolayer is located. This distinct property sets it apart from conventional coupled disks with identical features. A perturbation theory of coupled structures has also been applied to gain insights into the simulation results.

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带有纳米散射体的耦合异质盘谐振器中的波长分裂
在这项研究中,我们介绍了在两个具有不同折射率的圆盘耦合在一起的系统中,whispering gallery 模式的波长分裂特性。这项研究采用了基于有限差分时域的模拟。考虑到纳米粒子的数量、大小以及与磁盘表面的距离等因素,分析了纳米粒子的存在所引起的光谱变化。研究还包括纳米薄层的相互作用。我们的研究结果表明,波长分裂受纳米粒子或纳米层所在的特定圆盘的影响很大。这一独特性质使其有别于具有相同特征的传统耦合盘。我们还应用了耦合结构的扰动理论来深入了解模拟结果。
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来源期刊
CiteScore
5.00
自引率
3.70%
发文量
77
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.
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