IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-29 DOI: 10.1016/j.ijleo.2025.172329

Bo Cheng , Botao Jiang , Yuxiao Zou , GuoFeng Song

{"title":"Ultra-high-efficiency circularly polarized reflector based on the dislocated double rectangle arrays","authors":"Bo Cheng , Botao Jiang , Yuxiao Zou , GuoFeng Song","doi":"10.1016/j.ijleo.2025.172329","DOIUrl":"10.1016/j.ijleo.2025.172329","url":null,"abstract":"<div><div>The chiral lasers that can directly generate the circularly polarized light have important applications in a variety of fields, such as optical communications, biomedicine, materials processing, and optical measurements, and they are rapidly becoming an offshoot of the new generation of smart optoelectronic devices. However, the performance of current circularly polarized lasers is still limited by the effective design of chiral nanostructures, and their circular dichroism (CD) generally does not exceed 5%. With the powerful optical modeling capability of the COMSOL Multiphysics platform, we innovatively introduce two dislocated rectangular blocks to break the spatial symmetry of the metasurface and obtain a huge chirality (CD > 95%). This is then combined with a cylindrical array to form a Fabry–Pérot (FP) resonant cavity corresponding to a typical optical ternary system, which pushes the peak reflectivity of the cascaded metasurface to 99.6%. Our designed chiral cascade metasurfaces simultaneously satisfy the demanding requirements of high reflectivity and large circular dichroism, and are expected to replace the conventional multilayer distributed bragg reflectors (DBRs) in VCSELs, contributing to the further development of miniaturized chiral lasers.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"328 ","pages":"Article 172329"},"PeriodicalIF":3.1,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of multilayer graphene metamaterials plasmonic waveguides with ultra-low-loss mid-infrared 超低损耗中红外多层石墨烯超材料等离子体波导的设计

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-25 DOI: 10.1016/j.ijleo.2025.172327

Akbar Asadi

{"title":"Design of multilayer graphene metamaterials plasmonic waveguides with ultra-low-loss mid-infrared","authors":"Akbar Asadi","doi":"10.1016/j.ijleo.2025.172327","DOIUrl":"10.1016/j.ijleo.2025.172327","url":null,"abstract":"<div><div>In this the paper, a multilayer graphene metamaterials plasmonic waveguide (MGMPW) with ultra-low-loss has proposed in mid-infrared range. The MGMPW structure consisting of a porous <span><math><msub><mrow><mi>SiO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> stratum placed between multilayer graphene metamaterials with low index dielectric, and a high index dielectric nano-rib geometry, which both placed on a Magnesium fluoride <span><math><mrow><mo>(</mo><msub><mrow><mi>MgF</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>)</mo></mrow></math></span> substrate. The surface plasmon polaritons (SPPs) modes are supported by the multilayer graphene metamaterials with coupling plasmon polaritons at separate graphene layers over the high index dielectric nano-rib structure. Thus, the energy density in the proposed waveguide hardly confined in the area between the high index dielectric nano-edge Aluminum Oxide (<span><math><mrow><msub><mrow><mi>Al</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span>) and the multilayer graphene metamaterials. In the designed waveguide SPPs mode can be obtained the propagation length of nearly 100 µm and the normalized mode area of <span><math><mrow><mo>∼</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>7</mn></mrow></msup></mrow></math></span> by tunning the values of the waveguide geometry and material parameters. The modal properties of the MGMPW are simulated using technique of the finite element. The dependence of modal characteristics is obtained on the wavelength of incident light, the graphene Fermi energy, and the dimensions of the waveguide geometry in detail. Furthermore, the crosstalk between two adjoining proposed structure is studied to show the SPPs strong squeeze to apply components of photonic integrated circuits.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"327 ","pages":"Article 172327"},"PeriodicalIF":3.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Luminescent properties of NaMg6SiO8:Eu3+, Tb3+ phosphor for W-LED applications 用于W-LED的NaMg6SiO8:Eu3+， Tb3+荧光粉的发光性能

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-24 DOI: 10.1016/j.ijleo.2025.172325

Pragati Tale , Ashok Mistry , Bharti Bawanthade , S.J. Dhoble

引用次数: 0

How surface plasmon microscopy differs from conventional optical microscopy in the focal region? 表面等离子体显微镜在焦点区域与传统光学显微镜有何不同？

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-24 DOI: 10.1016/j.ijleo.2025.172326

Bei Zhang

{"title":"How surface plasmon microscopy differs from conventional optical microscopy in the focal region?","authors":"Bei Zhang","doi":"10.1016/j.ijleo.2025.172326","DOIUrl":"10.1016/j.ijleo.2025.172326","url":null,"abstract":"<div><div>Objective-coupled surface plasmon microscopy (SPM) shares a similar configuration with conventional optical microscopy (OM), but critical differences in their focal mechanisms are often neglected. Although SPM and OM exhibit operational similarities, the unique interaction between the focused beam and the sensor chip, driven by surface plasmon (SP) propagation, remains poorly understood. This leads to widespread errors, such as misaligning SPM’s focal plane with OM’s, which degrades resolution and sensitivity. While prior studies recognized the “defocus” effect, ambiguous definitions hindered its practical resolution. Herein, we systematically clarify the distinction between SPM, OM, and focused SPs. By analyzing the origin of defocus, we demonstrate that SPM’s focal plane results from a balance between optical focusing and SP self-interference. We define SPM’s ‘<em>real focal plane’</em> (optimized at 1–2 wavelengths of negative defocus) and ‘<em>focal spot</em>’ (smaller than OM’s diffraction limit), supported by simulations consistent with experimental data. These definitions provide actionable criteria for positioning the sensor chip, maximizing resolution without sacrificing signal strength. This work resolves the ambiguities and establishes practical guidelines for the accurate implementation of SPM in bio-sensing and surface analysis.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"328 ","pages":"Article 172326"},"PeriodicalIF":3.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct perturbative-framework analysis of the effective electromagnetic parameters for lossless nonlinear left-handed optical metamaterials possessing an inversion symmetry 具有反演对称性的无损非线性左旋光学超材料有效电磁参数的直接微扰框架分析

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-24 DOI: 10.1016/j.ijleo.2025.172319

L. Pascal Tchinda , S.J. Mba Ndeda , S.E. Mkam Tchouobiap

{"title":"Direct perturbative-framework analysis of the effective electromagnetic parameters for lossless nonlinear left-handed optical metamaterials possessing an inversion symmetry","authors":"L. Pascal Tchinda , S.J. Mba Ndeda , S.E. Mkam Tchouobiap","doi":"10.1016/j.ijleo.2025.172319","DOIUrl":"10.1016/j.ijleo.2025.172319","url":null,"abstract":"<div><div>In the present work, we derive the expressions of the effective material parameters of a lossless nonlinear left-handed optical material medium that possesses an inversion symmetry. Here, the left-handed optical material considered is an array of split-ring resonators and thin metal wires that are embedded in a nonlinear dielectric substrate material which is assumed to possess an inversion symmetry at the molecular level. Starting from the unit cell of the considered left-handed material lattice, we derive the lattice equations in terms of the charges induced by the incident field. We then employ a perturbative scheme and direct calculation method to mathematically obtain the effective permeability and permittivity of the left-handed material medium. From these findings, it appears that the behaviors of the effective electromagnetic material parameters are affected by the magnitudes of the third-order nonlinearities, which provide a new approach for better understanding of the electromagnetic responses of continuous medium.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"328 ","pages":"Article 172319"},"PeriodicalIF":3.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “Diode laser-based broad spectrum solid-state lighting and visible light communication” [Optik 327 (2025) 172281] “基于二极管激光的广谱固态照明和可见光通信”[Optik 327(2025) 172281]的勘误表

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-22 DOI: 10.1016/j.ijleo.2025.172317

Aayushi Soni , Dalip Singh Mehta

引用次数: 0

Corrigendum to “Supercontinuum generation for optical coherence tomography using magnesium fluoride photonic crystal fiber” [Optik 140 (2017) 545–554] “使用氟化镁光子晶体光纤产生光学相干层析成像的超连续统”的勘误表[Optik 140 (2017) 545-554]

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-21 DOI: 10.1016/j.ijleo.2025.172313

Ashkan Ghanbari , Alireza Kashaninia , Ali Sadr , Hamed Saghaei

引用次数: 0

Compact dual-band metamaterial antenna using deep neural network for next-generation wireless communication 采用深度神经网络的紧凑型双频超材料天线，用于下一代无线通信

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-20 DOI: 10.1016/j.ijleo.2025.172311

Kanakavalli Harshasri , R. Pandeeswari

{"title":"Compact dual-band metamaterial antenna using deep neural network for next-generation wireless communication","authors":"Kanakavalli Harshasri , R. Pandeeswari","doi":"10.1016/j.ijleo.2025.172311","DOIUrl":"10.1016/j.ijleo.2025.172311","url":null,"abstract":"<div><div>In this research paper, a novel deep neural network (DNN) methodology is used to accurately predict the resonant frequency of electric-inductive-interdigital capacitive (EL-IDC) metamaterial unit cells. The approach employs an equivalent circuit model (ECM) to identify critical design parameters that influence inductance and capacitance, facilitating an accurate analysis of electromagnetic behavior. DNN is implemented with multiple hidden layers, utilizing a comprehensive dataset generated from variations in geometric and material properties. Comparative evaluations of Bayesian optimization, Levenberg–Marquardt, and scaled conjugate gradient training algorithms with DNN reveal that Bayesian optimization achieves superior predictive accuracy while maintaining computational efficiency. The proposed methodology is further validated by designing an asymmetric coplanar stripline (ACS)-fed compact metamaterial antenna, achieving dual frequency bands 3.1 to 3.9 GHz and 7.0 to 8.7 GHz. Experimental and simulation results demonstrate the antenna’s excellent performance, including low reflection coefficients, effective impedance matching, and radiation characteristics. This study emphasizes the transformative potential of DNN, which is used to enhance the design functionality of metamaterials for next-generation wireless communication applications.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"327 ","pages":"Article 172311"},"PeriodicalIF":3.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and fabrication of the high-precision beam splitter with stress compensation analysis for infrared band-pass filters 红外带通滤波器高精度分束器的设计与制造

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-20 DOI: 10.1016/j.ijleo.2025.172300

Saeedeh Ghasemzadeh , Xiuhua Fu , Zhaowen Lin , Pan Yonggang , Zhenyu Wang , Ravi Kumar Arya , Junwei Dong

{"title":"Design and fabrication of the high-precision beam splitter with stress compensation analysis for infrared band-pass filters","authors":"Saeedeh Ghasemzadeh , Xiuhua Fu , Zhaowen Lin , Pan Yonggang , Zhenyu Wang , Ravi Kumar Arya , Junwei Dong","doi":"10.1016/j.ijleo.2025.172300","DOIUrl":"10.1016/j.ijleo.2025.172300","url":null,"abstract":"<div><div>This paper uses thin film interference principles to introduce a stress-compensated beam splitter design for infrared band-pass filters. The beam splitter provides high transmittance (<span><math><mo>></mo></math></span>96%) at 1540.53 nm while maintaining high reflectance (<span><math><mo>></mo></math></span>99.5%) at 1563 nm. The fabrication process utilizes an electron beam ion-assisted deposition technology. Tantalum pentoxide (Ta<sub>2</sub>O<sub>5</sub>) and silicon dioxide (SiO<sub>2</sub>) are chosen for their respective high and low refractive indices, forming the basis of the design. However, a significant challenge in fabrication lies in managing the root mean square (RMS) value of wavefront error induced by high packing density during electron beam ion-assisted deposition process. To address this, in this work, we developed a stress model to analyze the overall stress within the multilayer Ta<sub>2</sub>O<sub>5</sub>/SiO<sub>2</sub> structure because the fluctuation in stress exerted on the substrate affects the RMS value of wavefront error. From the stress model analysis, we employ backside coating which emerges as a viable solution to mitigate stress, ensuring structural integrity. The backside coating, chosen through a stress model, decreases the compressive stress from −46.94 MPa to −1.88 MPa and also reduces the RMS wavefront error from 63.60 nm to 8.26 nm. After stress compensation, the beam splitter’s transmission properties are evaluated using a spectrophotometer. The experimental results validate the performance of the fabricated beam splitter, meeting the specifications outlined in the study.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"327 ","pages":"Article 172300"},"PeriodicalIF":3.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Short-pulse generation in the 1-micron region using a neodymium-doped fiber laser with copper phthalocyanine absorber 利用含铜酞菁吸收剂的掺钕光纤激光器在1微米区域产生短脉冲

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-18 DOI: 10.1016/j.ijleo.2025.172316

Nurul Izzah S. Wadi , Aeriyn D. Ahmad , N. Kasim , Muhammad Imran M.A. Khudus , Ahmad Shuhaimi A. Bakar

引用次数: 0

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