磁场和几何结构对多层球形量子点线性和非线性光学性质的影响

IF 2.4 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Solid State Communications Pub Date : 2025-10-07 DOI:10.1016/j.ssc.2025.116178

A. Fakkahi , H. Azmi , H. Dakhlaoui , M. Jaouane , A. Sali , A. Ed-Dahmouny , R. Arraoui , K. El-Bakkari , J. El-Hamouchi , O. Benhammou

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引用次数: 0

摘要

本文研究了多层球形量子点（MSQDs）的光学特性，重点研究了层尺寸和外磁场（b场）对其光学特性的影响。利用有限元方法，我们系统地分析了对线性、三阶非线性和全光吸收系数以及折射率变化的影响。结果表明，量子点的结构参数对光学响应有很强的依赖性。具体来说，即使层厚度的微小变化也会导致线性和三阶非线性吸收的显著变化，突出了量子约束的显着作用。此外，磁场的存在显示出实质上调制光学特性，进一步强调其在调谐msqd的光电行为中的关键作用。这项工作为几何结构和外场之间的相互作用提供了有价值的见解，为设计具有定制光学功能的先进纳米光子器件提供了基础。

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Magnetic-field and geometric structure effects on the linear and nonlinear optical properties of multilayered spherical quantum dots

This study investigates the optical properties of multilayered spherical quantum dots (MSQDs) with a focus on the influence of layer dimensions and external magnetic field (B-field). Utilizing the finite element method, we systematically analyze the effects on linear, third-order nonlinear, and total optical absorption coefficients, as well as refractive index variations. The results demonstrate a strong dependence of optical responses on the structural parameters of the quantum dots. Specifically, even minor variations in layer thickness lead to significant changes in both linear and third-order nonlinear absorption, highlighting the pronounced role of quantum confinement. Additionally, the presence of a magnetic field is shown to substantially modulate the optical characteristics, further emphasizing its critical role in tuning the optoelectronic behavior of MSQDs. This work provides valuable insights into the interplay between geometric structure and external fields, offering a foundation for the design of advanced nanophotonic devices with tailored optical functionalities.

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来源期刊

Solid State Communications 物理-物理：凝聚态物理

CiteScore

3.40

自引率

4.80%

发文量

287

审稿时长

51 days

期刊介绍： Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged. A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions. The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.