Optical and Quantum Electronics最新文献_第6页

Bifurcation analysis, phase portrait, and exploring exact traveling wave propagation of M-fractional (3 + 1) dimensional nonlinear equation in the fluid medium

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-15 DOI: 10.1007/s11082-025-08093-4

Md. Mamunur Roshid, Mahtab Uddin, Mohamed Abdalla, Md. Ahsan Ullah

{"title":"Bifurcation analysis, phase portrait, and exploring exact traveling wave propagation of M-fractional (3 + 1) dimensional nonlinear equation in the fluid medium","authors":"Md. Mamunur Roshid, Mahtab Uddin, Mohamed Abdalla, Md. Ahsan Ullah","doi":"10.1007/s11082-025-08093-4","DOIUrl":"10.1007/s11082-025-08093-4","url":null,"abstract":"<div><p>This work studies the bifurcation analysis, phase portrait, and dynamics behavior of exact traveling wave solutions for the time M-fractional (3 + 1)-dimensional Painlevé integrable model. This model is used to describe some complex phenomena in nonlinear science and is crucial for addressing various practical challenges, including key models in areas like quantum mechanics, statistical physics, nonlinear optics, and celestial Mechanics. By bifurcation theory, we find the phase portrait of the proposed model. Bifurcation analysis in the proposed systems helps figure out how small changes in parameters can cause big changes in how the system behaves, like going from stable states to chaotic dynamics. It pinpoints critical thresholds where these transitions occur, aiding in the prediction and control of complex behaviors. We also present some traveling wave solutions according to the phase portrait orbit. Furthermore, the exact traveling wave solutions of the time M-fractional (3 + 1)-dimensional Painlevé integrable model are investigated by using the modified simple equation technique. This method provides the solutions directly without any predefined solutions. Under the condition, the solutions are real and complex valued in terms of exponential, trigonometric, and hyperbolic function form. For the special ideals of free parameters, we will include the bright bell wave, dark bell wave, interaction of kink and periodic lump wave, double periodic wave, double dark bell wave, and so on. By visualizing, the three, two-dimensional and density diagrams, the dynamic properties of the proposed model are examined and illustrated, enhancing the comprehension and application of time M-fractional (3 + 1)-dimensional Painlevé integrable model.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 4","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical investigation of a multifunctional tunable terahertz metamaterial absorber based on vanadium dioxide and graphene

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-12 DOI: 10.1007/s11082-025-08111-5

Leila Shakiba, Mohammad Reza Salehi

{"title":"Theoretical investigation of a multifunctional tunable terahertz metamaterial absorber based on vanadium dioxide and graphene","authors":"Leila Shakiba, Mohammad Reza Salehi","doi":"10.1007/s11082-025-08111-5","DOIUrl":"10.1007/s11082-025-08111-5","url":null,"abstract":"<div><p>This paper introduces and investigates a graphene and vanadium dioxide based metamaterial absorber in the terahertz region. The proposed structure consists of four layers (gold, dielectric layer, graphene, and VO₂) and is designed using the phase transition properties of VO₂ and the tunability of graphene. Simulation results show that in the insulating phase, the structure operates as a narrowband absorber with distinct absorption peaks, while in the metallic phase, broadband performance with over 80% absorption in the 4.28–7.55 THz range is observed. The structure’s performance was analyzed through the electric field distribution and surface current, and the effects of temperature variations and chemical potential adjustments on the absorption spectrum were studied. A distinguishing feature of this structure is its tunable absorption enabled by temperature and chemical potential changes. The key attributes of this structure, including tunability, sensitivity to temperature changes, and its application in logic gates, make it a suitable candidate for sensing and optical information processing applications in the terahertz region.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 3","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

2 μm Q-switched pulses using a double-clad fiber master oscillator power amplifier (MOPA) with high peak power intensity of 3.11 MW/cm2 and pulse energy of 7.9 µJ

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-12 DOI: 10.1007/s11082-025-08095-2

H. Ahmad, M. U. M. Ithnahaini, M. Z. Samion, M. F. Ismail

引用次数: 0

Power oscillation solitons in PT symmetric elliptical ring potential wells

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-12 DOI: 10.1007/s11082-025-08102-6

Wang Jun, Qing Wang

引用次数: 0

Optical properties of a Si3N4 nanowaveguide and its broadband infrared spectra

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-12 DOI: 10.1007/s11082-025-08115-1

Zahra Ostovar, Hamid R. Bakhtiarizadeh, Abolfazl Safaei Bezgabadi

{"title":"Optical properties of a Si3N4 nanowaveguide and its broadband infrared spectra","authors":"Zahra Ostovar, Hamid R. Bakhtiarizadeh, Abolfazl Safaei Bezgabadi","doi":"10.1007/s11082-025-08115-1","DOIUrl":"10.1007/s11082-025-08115-1","url":null,"abstract":"<div><p>By calculating the optical parameters of a silicon nitride nanowaveguide, the supercontinuum spectra generated through the desired waveguide is simulated making use of the generalized nonlinear Schrödinger equation which governs the supercontinuum generation process. The dispersion coefficients for three different values of a structural parameter of the waveguide have been calculated from the reported dispersion profiles of the nanowaveguide. The pulse propagation of a sech-shaped pulse (1 kW, 30 fs) through the waveguide is simulated making use of the fourth-order Runge–Kutta method. Here, the simulated supercontinuum spectra are compared for different values of the chosen geometric parameter. At a specific geometry of the silicon nitride waveguide, an extreme spectral broadening is generated, especially in the infrared region. It can be observed that the generated supercontinuum spectra from the structure with the structural parameter <span>({ H_2})</span> equals to 50 nm is broader than the others, which is due to the presence of multiple zero-dispersion wavelengths in its dispersion profile. The generated supercontinuum spectra cover a wavelength range of 1260–5200 nm with a flatness of 30 dB. Furthermore, the soliton dynamics through this supercontinuum process have been discussed.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 3","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Approximate solution of time-fractional gas dynamics equation using exponential B-spline functions

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-12 DOI: 10.1007/s11082-025-08051-0

Rabia Noureen, Maryam Asgir, Muhammad Kashif Iqbal, Muhammad Azeem

引用次数: 0

Bessel-Gaussian beam scintillation index in maritime atmospheric turbulence

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-12 DOI: 10.1007/s11082-025-08108-0

F. Boufalah, L. Dalil-Essakali, A. Belafhal

引用次数: 0

Silver, silicon, and selenium-based surface plasmon resonance sensor for pathogen bacteria detection in visible region

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-12 DOI: 10.1007/s11082-025-08118-y

Arun Uniyal, Manoj Kumar, Rajeev Kumar, Gaurav Dhiman, Gufranullah Ansari, Amrindra Pal, Mohammad Z. Ahmed

{"title":"Silver, silicon, and selenium-based surface plasmon resonance sensor for pathogen bacteria detection in visible region","authors":"Arun Uniyal, Manoj Kumar, Rajeev Kumar, Gaurav Dhiman, Gufranullah Ansari, Amrindra Pal, Mohammad Z. Ahmed","doi":"10.1007/s11082-025-08118-y","DOIUrl":"10.1007/s11082-025-08118-y","url":null,"abstract":"<div><p>The proposed study reported a numerical simulation of a surface plasmon resonance (SPR) sensor for pathogen detection using a layered structure that includes a prism, silver (Ag), silicon (Si), selenium (Se), and sensing medium. The materials are selected and arranged along the z-direction with maximum efficiency to improve the sensor’s sensitivity and accuracy. The Ag layer strengthens surface plasmon waves, and the SF11 prism makes it easier for incident light to be efficiently coupled to the plasmonic surface. Through improved performance over the propagation and confinement of the surface plasmons (SPs), the addition of Si and Se layers enhances overall performance. We could assess the sensor’s performance parameters by examining the SPR curves, which provide important details about the sensor’s sensitivity, resonance angle shift, and detection accuracy (DA). Our simulation results show that our multi-layered SPR sensor demonstrates exceptional sensitivity and specificity for pathogen detection, with a maximum sensitivity of 147.68 degree/RIU, a DA of 0.1290 degree<sup>−1</sup>, and a figure of merit (FoM) of 19.035 RIU<sup>−1</sup>, which makes it a valuable tool for early infectious illness diagnosis and analysis.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 3","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical analysis of Ga gradient effects in ACIGS absorbers for high-efficiency tandem solar cells

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-12 DOI: 10.1007/s11082-025-08092-5

Nour El I. Boukortt, Antonio Garcia Loureiro, Ohood A. Almutairi

{"title":"Numerical analysis of Ga gradient effects in ACIGS absorbers for high-efficiency tandem solar cells","authors":"Nour El I. Boukortt, Antonio Garcia Loureiro, Ohood A. Almutairi","doi":"10.1007/s11082-025-08092-5","DOIUrl":"10.1007/s11082-025-08092-5","url":null,"abstract":"<div><p>Ag-alloyed Cu(In,Ga)Se₂ (ACIGS) is a promising material for the bottom subcell in tandem solar cell structures, offering a tunable bandgap that spans the optimal range for maximum efficiency; however, the bandgap widening of ACIGS thin films poses a significant challenge in enhancing their photocurrent. This paper investigates the impact of different grading profiles, specifically focusing on the 'hockey stick'/V-like Ga gradient–induced (GGI) profiles, on the performance of thin-film ACIGS cells. To enhance the physical understanding of these grading profiles we have used Silvaco TCAD tools to analyze how these profiles' depths, notch position, and slope affect the power conversion efficiency (PCE). The optimized ACIGS cell achieves a PCE of 25.80%, compared to 23.60% for the reference device. For the tandem configuration, we pair the optimized ACIGS bottom cell (double grading profile) with a perovskite top cell (band gap ~ 1.66 eV), achieving an overall efficiency of 30.26% under AM1.5G illumination. The obtained results highlight the critical role of Ga gradient profiles in enhancing the bottom cell's performance and stability. Additionally, we compare our results with existing studies to evaluate the broader impact of Ga compositional optimization on ACIGS-based solar cells. This work provides valuable insights into advanced grading strategies and helps us understand the physical behaviour of these high-performance tandem solar cells.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 3","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Propagation characteristics of Laguerre-Whittaker-Gaussian beam in gradient index medium

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-12 DOI: 10.1007/s11082-025-08109-z

F. Iraoui, F. Khannous, A. Belafhal

引用次数: 0