Optical and Quantum Electronics最新文献_第6页

Cascaded-parallel MZM-based 80 GHz-optical millimeter-wave generation: a review of topologies and a novel phase-controlled scheme 基于级联并联mzm的80ghz光毫米波产生：拓扑结构综述和一种新的相位控制方案

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2026-09-15 DOI: 10.1007/s11082-026-09137-z

Malik Efshana Bashir, Faroze Ahmad

引用次数: 0

Anisotropic and tunable third-harmonic generation in hybrid black phosphorus–grating metasurfaces 混合黑磷光栅超表面中各向异性和可调谐三次谐波的产生

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2026-09-15 DOI: 10.1007/s11082-026-09140-4

Zeinab Zanbouri, Mohammad Sabaeian, Ehsan Shakerzadeh

{"title":"Anisotropic and tunable third-harmonic generation in hybrid black phosphorus–grating metasurfaces","authors":"Zeinab Zanbouri, Mohammad Sabaeian, Ehsan Shakerzadeh","doi":"10.1007/s11082-026-09140-4","DOIUrl":"10.1007/s11082-026-09140-4","url":null,"abstract":"<div><p>We numerically explore third-harmonic generation (THG) in anisotropic black phosphorus (BP) metasurfaces engineered with dielectric grating structures and gold backed reflector, operating in the terahertz (THz) regime. The design supports strong plasmon-polariton resonances and Fabry–Pérot (FP) cavity effects, leading to substantial local field enhancement and efficient nonlinear response. In the armchair (AC) direction, the THG output reaches up to 2.3 W at resonance, with a notable reduction as the d<sub>g</sub> (grating depth) increases. The zigzag (ZZ) orientation exhibits lower output power, reflecting BP’s inherent optical anisotropy. This reduction originates from the detuning of the hybrid cavity–plasmon resonance as the grating becomes deeper, since the cavity mode red-shifts while the intrinsic BP plasmon frequency remains nearly fixed. Moreover, the local field maximum shifts deeper inside the metallic grating, reducing the spatial overlap between the enhanced field and the BP layer at the top surface. These results demonstrate the potential of BP-based grating metasurfaces for tunable and high-efficiency nonlinear photonic devices in the far-infrared and THz domains.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"58 11","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148985386","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

High-sensitivity plasmonic refractive index sensor based on a split disc–ring resonator 基于分裂盘环谐振器的高灵敏度等离子体折射率传感器

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2026-09-15 DOI: 10.1007/s11082-026-09144-0

Erfan Gholamzadeh, Sahel Javahernia, Hassan Rasooli Saghai, Taher Abedinzadeh

{"title":"High-sensitivity plasmonic refractive index sensor based on a split disc–ring resonator","authors":"Erfan Gholamzadeh, Sahel Javahernia, Hassan Rasooli Saghai, Taher Abedinzadeh","doi":"10.1007/s11082-026-09144-0","DOIUrl":"10.1007/s11082-026-09144-0","url":null,"abstract":"<div><p>A highly sensitive plasmonic refractive index (RI) sensor based on a split disc–ring resonator (SDRR) is presented and numerically analyzed. The sensor comprises a split disc surrounded by a split ring, both fabricated on a SiO₂ substrate. This structure supports coupled plasmonic modes, specifically ‘bright’ and ‘dark-like’ modes, which lead to strong near-field interactions and Fano-type interference. Through extensive numerical simulations using the Finite-Difference Time-Domain (FDTD) method, we investigate the electromagnetic coupling between a radiative split-disc and a field-confining split-ring resonator. The simulations demonstrate that the Au–Au configuration exhibits the best overall sensing performance over a refractive index range of 1.33 to 1.43, achieving a maximum sensitivity (S) of 1300.1 nm/RIU, a maximum figure of merit (FOM) of 9.1292 RIU<sup>⁻1</sup>, a maximum quality factor (Q) of 18.15, a minimum full width at half maximum (FWHM) of 142.41 nm, and a minimum theoretical, simulation-based limit-of-detection estimate (LoD) of 0.13285 RIU. Given the high linearity (R<sup>2</sup> = 0.999717), and well-defined spectral response in this RI range, these findings indicate that the proposed SDRR structure is a promising platform for numerically investigated refractometric applications.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"58 11","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148985383","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

Trace Bi incorporation in (FA0.9Cs0.1)PbI3 perovskites: suppressed trap-related losses and improved operational stability toward 22% efficient solar cells 微量Bi掺入（FA0.9Cs0.1）PbI3钙钛矿：抑制陷阱相关损失和提高22%效率太阳能电池的运行稳定性

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2026-09-11 DOI: 10.1007/s11082-026-09096-5

Ahmet Sait Alali, Selma Rabhi, Sagar Bhattarai, K. Deepthi Jayan

{"title":"Trace Bi incorporation in (FA0.9Cs0.1)PbI3 perovskites: suppressed trap-related losses and improved operational stability toward 22% efficient solar cells","authors":"Ahmet Sait Alali, Selma Rabhi, Sagar Bhattarai, K. Deepthi Jayan","doi":"10.1007/s11082-026-09096-5","DOIUrl":"10.1007/s11082-026-09096-5","url":null,"abstract":"<div><p>Defect management remains a critical barrier to the efficiency and durability of hybrid perovskite solar cells. Here, we investigate trace bismuth (Bi) incorporation via precursor alloying in mixed-cation perovskites (FA₀.₉Cs₀.₁)PbI₃ and its correlation with trap-related losses and operational stability. Comprehensive characterization shows that Bi incorporation is associated with reduced electronic disorder, lower Urbach energy, a 1.6× enhancement in photoluminescence (PL) intensity, and an increase in carrier lifetime of over 70%. Morphological analysis by AFM reveals a reduction in surface roughness from 25.7 to 22.5 nm. Space-charge-limited-current measurements indicate a ~ 2× reduction in effective trap density, which correlates with improved open-circuit voltage and fill factor. Devices fabricated on standard FTO/SnO₂/Spiro-OMeTAD stacks exhibit reproducible power conversion efficiency gains, increasing from 20.1% for pristine devices to 22.3% in Bi-incorporated devices. Maximum-power-point tracking further shows improved operational stability over the measured duration, with T₈₀ increasing from 18.5 h to > 200 h and the fitted decay constant decreasing by 36%. Because direct structural and chemical verification of Bi site occupancy or quantitative incorporation in the final films was not available in this work, the mechanistic interpretation is based on correlated optoelectronic, morphological, and device-level trends rather than definitive atomic-scale assignment. Overall, this study shows that trace Bi incorporation is a practical and process-compatible route to reducing trap-related losses and improving the operational durability of FA/Cs lead iodide perovskite solar cells.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"58 11","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927736","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

TCAD simulation study of a ZnO-based dopingless gate-all-around nanowire junctionless FET exhibiting negative photoresponse for UV photodetection 具有负光响应的zno基无掺杂栅极全纳米线无结场效应管的TCAD仿真研究

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2026-09-11 DOI: 10.1007/s11082-026-09112-8

Devendra Rani, Pushpa Raikwal, Koushik Dutta

{"title":"TCAD simulation study of a ZnO-based dopingless gate-all-around nanowire junctionless FET exhibiting negative photoresponse for UV photodetection","authors":"Devendra Rani, Pushpa Raikwal, Koushik Dutta","doi":"10.1007/s11082-026-09112-8","DOIUrl":"10.1007/s11082-026-09112-8","url":null,"abstract":"<div><p>A dopingless cylindrical gate-all-around nanowire junctionless FET UV photodetector is investigated using TCAD simulations. In the proposed device, ZnO layer is used as both the gate material and the optical absorber, with a high-K dielectric (HfO<sub>2</sub>), enabling strong electrostatic control and efficient absorption at 350 nm. The photodetection behaviour is mainly observed in the subthreshold region. Small changes in electrostatics strongly affect the current. A clear shift in threshold voltage and reduction in off-state current are observed. This indicates a negative photoresponse driven by barrier modulation and also shows a strong sensitivity to ultraviolet light. A comparison with a lightly doped device shows that the dopingless structure offers lower leakage and better detection capability. The proposed device exhibits ultra low dark current of ~ 10<sup>− 15</sup> A, responsivity of 1.99 A/W, detectivity as <span>(2times{10}^{11})</span> Jones, and external quantum efficiency of 705% under 100 µW/cm<sup>2</sup> of UV light intensity. These results suggest that the proposed device is a promising candidate for low-power UV photodetection.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"58 11","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927327","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

Partially coherent Laguerre-Bessel-Gaussian Schell-model beams shaping in a uniaxial crystal orthogonal to optical axis 部分相干拉盖尔-贝塞尔-高斯-谢尔模型光束在与光轴正交的单轴晶体中的成形

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2026-09-11 DOI: 10.1007/s11082-026-09143-1

H. Nabil, M. Bayraktar, S. Chatzinotas, A. Balhamri, A. Belafhal

引用次数: 0

Cubic-quintic nonlinear Helmholtz model: novel exact solutions, stability and phase portraits 三次五次非线性亥姆霍兹模型：新的精确解、稳定性和相位肖像

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2026-09-10 DOI: 10.1007/s11082-026-09130-6

Hajar F. Ismael, Ahmad M. Husien, Tukur A. Sulaiman, Shoukry El-Ganaini, Hasan Bulut

引用次数: 0

Electromagnetic characterization of multiple-band THz inverse polarizer based on graphene strip grating 基于石墨烯带状光栅的多波段太赫兹反偏振器的电磁特性

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2026-09-10 DOI: 10.1007/s11082-026-09103-9

Fedir O. Yevtushenko, Sergii V. Dukhopelnykov, Tatiana L. Zinenko, Ronan Sauleau, Oleksandr I. Nosych

{"title":"Electromagnetic characterization of multiple-band THz inverse polarizer based on graphene strip grating","authors":"Fedir O. Yevtushenko, Sergii V. Dukhopelnykov, Tatiana L. Zinenko, Ronan Sauleau, Oleksandr I. Nosych","doi":"10.1007/s11082-026-09103-9","DOIUrl":"10.1007/s11082-026-09103-9","url":null,"abstract":"<div><p>We investigate the discrimination between two orthogonally polarized terahertz plane waves using a microsize graphene strip-on-substrate grating operating in the multiple-band inverse-polarizer regime. The analysis employs the recently developed and validated full-wave meshless algorithm based on the method of analytical regularization, which ensures mathematical convergence of the solution. Compared to the previously studied narrow-strip configurations, we consider a grating with wide strips or larger fill factor that can demonstrate a richer spectrum of plasmon-mode resonances in the H-polarization case in the single Floquet harmonic frequency range. The near-field maps confirm the formation of localized plasmon hot spots between the strip edges and whole period standing-wave patterns associated with the ultrahigh-Q lattice-mode resonance. For the E-polarization, only the lattice resonances remain, providing a flat transmission background. These findings reveal that the broadband polarization selectivity in the THz range can be achieved by engineering the strip width and fill factor, thus extending the concept of the inverse polarizer to the multi-band regime. </p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"58 11","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927345","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

Hexagonal hollow core PCF-based blood cancer, skin cancer and cervical cancer cells identification: model and simulation 基于六角形空心核pcf的血癌、皮肤癌和宫颈癌细胞鉴定：模型与模拟

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2026-09-10 DOI: 10.1007/s11082-026-09125-3

Md. Alamin Hossain, Md. Parash Chowdhury, Md. Mahabub Hossain, Md. Selim Hossain

{"title":"Hexagonal hollow core PCF-based blood cancer, skin cancer and cervical cancer cells identification: model and simulation","authors":"Md. Alamin Hossain, Md. Parash Chowdhury, Md. Mahabub Hossain, Md. Selim Hossain","doi":"10.1007/s11082-026-09125-3","DOIUrl":"10.1007/s11082-026-09125-3","url":null,"abstract":"<div><p>The study presents a novel model of hexagonal hollow-core photonic crystal fiber (HHC-PCF) sensor for detecting multiple cancer cells in skin, blood, and cervical tissues. Early cancer detection is vital, driving the need for sensitive THz biosensors. Existing THz-PCF sensors exhibit low sensitivity and high loss; thus we propose a trapezoidal hollow-core PCF using Zeonex for multi-cancer detection. Using the finite element technique (FEM), the design was tested showing optimal results at 2.7 THz. The sensor achieves peak sensitivity of 95.85% for blood cancer cells (Jurkat), 94.76% for normal cells (Jurkat free), 94.96% for skin cancer cells (Basal), 93.89% for normal cells (Basal free), 94.74% for cervical cancer cells (HeLa), and 93.97% for normal cells (HeLa free), respectively. The analysis also showed that the sensor’s material losses and CL (confinement loss) losses were significantly lower than those of other sensor models. Furthermore, the sensor’s confinement loss was approximately 2.761 × 10<sup>−12</sup> cm<sup>−1</sup> for Jurkat cancer, 5.507 × 10<sup>−12</sup> cm<sup>−1</sup> for Basal cancer, 2.056 × 10<sup>−12</sup> cm<sup>−1</sup> for HeLa-Cervical cancer cells, respectively. The sensor outperforms existing designs in sensitivity and loss and is compatible with conventional fabrication.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"58 11","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927344","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

Optical properties of encapsulated organic dyes: a comparative study of xanthenes, azo, triphenylmethanes, and natural dyes 包封有机染料的光学性质：杂蒽、偶氮、三苯基甲烷和天然染料的比较研究

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2026-09-10 DOI: 10.1007/s11082-026-09138-y

Soheil Sharifi

引用次数: 0