Physics Letters A最新文献_第3页

On the application of a Silicon photomultiplier-based receiver for binary phase-shift-keying protocols

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-03-05 DOI: 10.1016/j.physleta.2025.130403

Silvia Cassina , Michele N. Notarnicola , Stefano Olivares , Alessia Allevi

引用次数: 0

Ion-induced dipole interaction in confining cavities

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-03-05 DOI: 10.1016/j.physleta.2025.130408

Leonan Augusto Massete Perá , Josimar Fernando da Silva , Elso Drigo Filho

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Quasi-1D boundary-layer flow with wall transpiration under the Green–Naghdi extension of classical, incompressible viscous fluid flow theory

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-03-04 DOI: 10.1016/j.physleta.2025.130404

N. Valdivia , P.M. Jordan

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Tuning rainbow trapping in higher-order topological insulators

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-03-03 DOI: 10.1016/j.physleta.2025.130406

Yi Zhou, Yu Mao, Shenwei Yin, Yang Li, Zefa Sun, Zhixiang Tang

{"title":"Tuning rainbow trapping in higher-order topological insulators","authors":"Yi Zhou, Yu Mao, Shenwei Yin, Yang Li, Zefa Sun, Zhixiang Tang","doi":"10.1016/j.physleta.2025.130406","DOIUrl":"10.1016/j.physleta.2025.130406","url":null,"abstract":"<div><div>Rainbow trapping has garnered significant attention due to its ability to separate, slow, and trap waves of different frequencies at different positions. However, most rainbow devices are limited to operating within a specific frequency band, as the structure of the unit cell and the lattice constant cannot be adjusted after the device is fabricated. In this work, we explore the relationship between higher-order topological corner modes (HOTCMs) and the geometric structures of the corners, using topological phononic crystals as a platform. We also propose a method for frequency-tunable rainbow trapping in higher-order topological insulators (HOTIs). The HOTIs are constructed by varying the heights of the mediums within the crystals, and the frequency tunability of the topological rainbow is achieved by introducing an out-of-plane tunable structural parameter, i.e. the channel height. Numerical simulations show that HOTCMs are strongly dependent on the configurations of corners and HOTCMs can appear sequentially in a particular order. Furthermore, the operating frequency of rainbow trapping increases as the channel height is increased within a certain range. This work offers a possibility for tuning rainbow trapping.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"541 ","pages":"Article 130406"},"PeriodicalIF":2.3,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578112","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

Polarization-multiplexing metasurface for vectorial optical field demultiplexing and detection on higher-order Poincaré sphere

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-03-01 DOI: 10.1016/j.physleta.2025.130402

Peng Zhou , Shikai Deng , Xinyu Wen , Lei Chen , Han Ye , Yumin Liu

{"title":"Polarization-multiplexing metasurface for vectorial optical field demultiplexing and detection on higher-order Poincaré sphere","authors":"Peng Zhou , Shikai Deng , Xinyu Wen , Lei Chen , Han Ye , Yumin Liu","doi":"10.1016/j.physleta.2025.130402","DOIUrl":"10.1016/j.physleta.2025.130402","url":null,"abstract":"<div><div>The emergence of vectorial optical fields (VOFs) featuring polarization singularities has introduced a new dimension to high-capacity optical communication. Cylindrical vector beams (CVBs) with VOFs play a pivotal role in enhancing multiplexing capabilities due to their transmission stability and resilience to turbulence. Straightforwardly and efficiently demultiplex CVBs with minimal crosstalk remain challenging for practical applications. This study proposes a single-layer dielectric metasurface for demultiplexing CVBs at telecommunications wavelengths. By leveraging polarization multiplexing and adjusting the rotation angle of customized metasurface units, effective spatial separation of CVB pairs is demonstrated. Furthermore, the methodology extends to demultiplexing multiple CVB pairs using interleaved unit cells set at distinct customized angles. The demultiplexing of 12-channel CVBs and their subsequent focusing into Gaussian spots were successfully demonstrated as a proof of concept. This work holds the significant potential for complex structured light manipulation and high-capacity optical communications.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130402"},"PeriodicalIF":2.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552354","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

Detailed design of Josephson parametric isolators with a customized DC-SQUID model using the harmonic balance method

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-03-01 DOI: 10.1016/j.physleta.2025.130401

Liangliang Yang , Kaiyong He , Genting Dai , Mingjun Cheng , Xiao Geng , Linpan Jiang , Jinlin Chang , Jianshe Liu , Wei Chen

{"title":"Detailed design of Josephson parametric isolators with a customized DC-SQUID model using the harmonic balance method","authors":"Liangliang Yang , Kaiyong He , Genting Dai , Mingjun Cheng , Xiao Geng , Linpan Jiang , Jinlin Chang , Jianshe Liu , Wei Chen","doi":"10.1016/j.physleta.2025.130401","DOIUrl":"10.1016/j.physleta.2025.130401","url":null,"abstract":"<div><div>In the pursuit of on-chip superconducting non-magnetic non-reciprocal devices, several designs have emerged, yet their development has lacked a unified approach, complicating the early design stages. We addressed this by building a circuit model of superconducting components in Advanced Design System (ADS) and simulating a superconducting isolator using the harmonic balance (HB) method. Our model's accuracy was validated through comparison with experimental data. The designed superconducting isolator achieved <span><math><mrow><mo>−</mo><mn>20</mn><mrow><mspace></mspace><mtext>dB</mtext></mrow></mrow></math></span> isolation, a bandwidth of less than <span><math><mrow><mn>500</mn><mspace></mspace><mtext>MHz</mtext></mrow></math></span>, and an insertion loss of <span><math><mrow><mn>5</mn><mrow><mspace></mspace><mtext>dB</mtext></mrow></mrow></math></span>. This demonstrates the strong potential of our method in the design of superconducting microwave devices.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130401"},"PeriodicalIF":2.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552352","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

Enhancing the super-resolution of incoherent sources via noiseless attenuation

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-28 DOI: 10.1016/j.physleta.2025.130400

Ying Xia , Huan Zhang , Yaxin Wang , Zeyang Liao , Xiaoqi Zhou

引用次数: 0

Generation of relativistic few-cycle radially polarized mid-infrared pulse in plasma channel

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-28 DOI: 10.1016/j.physleta.2025.130399

Dong-Ao Li , Guo-Bo Zhang , Yue Cao , Li-Xiang Hu , Xiao-Hu Yang , Fu-Qiu Shao , Tong-Pu Yu

{"title":"Generation of relativistic few-cycle radially polarized mid-infrared pulse in plasma channel","authors":"Dong-Ao Li , Guo-Bo Zhang , Yue Cao , Li-Xiang Hu , Xiao-Hu Yang , Fu-Qiu Shao , Tong-Pu Yu","doi":"10.1016/j.physleta.2025.130399","DOIUrl":"10.1016/j.physleta.2025.130399","url":null,"abstract":"<div><div>Polarized mid-infrared (mid-IR) pulses have many practical applications, including optical imaging, harmonics generation, and laser-electron acceleration, etc. Although it has been able to generate such pulses based on traditional nonlinear optical methods, extending it to long-wavelength, few-cycle, and relativistic intensity range is still very challenging. Here, we proposed a scheme to generate a relativistic long-wavelength few-cycle and radially polarized mid-IR pulse via the photon deceleration. Three-dimensional particle-in-cell simulations show that, by using a plasma channel, the radially polarized mid-IR pulse can be obtained with a center wavelength of 9.4 μm, a dimensionless intensity of <span><math><msub><mrow><mi>a</mi></mrow><mrow><mi>M</mi><mi>I</mi><mi>R</mi></mrow></msub><mo>≈</mo><mn>2.5</mn></math></span>, a 72 fs FWHM duration containing 2.3 optical cycles, and a conversion efficiency of 3.4%. Meanwhile, the beam parameters of the generated radially polarized mid-IR pulse can be effectively controlled by changing the plasma channel depth. The radially polarized pulse can be focused further to excite a stronger plasma wake in a plasma channel with large depth, leading to an increase in the normalized intensity and conversion efficiency of the mid-IR pulse. Such mid-IR pulse sources may offer new opportunities for ultrafast applications and high-field physics, etc.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130399"},"PeriodicalIF":2.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534797","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

Highly sensitive malaria detection using a graphene-coated dual circular ring resonator biosensor with behaviour prediction based on stacking ensemble

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-27 DOI: 10.1016/j.physleta.2025.130398

Jacob Wekalao , Stephen Maina Njoroge , Oumaymah Elamri

{"title":"Highly sensitive malaria detection using a graphene-coated dual circular ring resonator biosensor with behaviour prediction based on stacking ensemble","authors":"Jacob Wekalao , Stephen Maina Njoroge , Oumaymah Elamri","doi":"10.1016/j.physleta.2025.130398","DOIUrl":"10.1016/j.physleta.2025.130398","url":null,"abstract":"<div><div>This study presents a biosensor incorporating graphene and copper for highly sensitive malaria detection. The sensor design features dual circular ring resonators surrounded by a rectangular resonator, all supported on a graphene-coated SiO₂ substrate. The sensor achieves a remarkable sensitivity of 800 GHzRIU<sup>-1</sup> within a refractive index range of 1.373–1.402. Comprehensive parameter optimization studies demonstrate the sensor's robust performance across various operating conditions, including graphene chemical potential, incident angle, and resonator dimensions. The integration of a stacking ensemble machine learning approach further enhances the sensor's predictive capabilities, achieving correlation coefficients (R²) up to 100 % for transmission spectra predictions. COMSOL Multiphysics simulations validate the sensor's detection mechanisms and field distribution characteristics. The proposed biosensor represents a significant advancement in malaria detection technology, offering high sensitivity, reliability, and practical fabrication feasibility.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"541 ","pages":"Article 130398"},"PeriodicalIF":2.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563856","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

Dual microring resonator sensor for simultaneous sensing of magnetic field and temperature

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-26 DOI: 10.1016/j.physleta.2025.130397

Pranav George , A.C. Saritha , Ajith Ramachandran

{"title":"Dual microring resonator sensor for simultaneous sensing of magnetic field and temperature","authors":"Pranav George , A.C. Saritha , Ajith Ramachandran","doi":"10.1016/j.physleta.2025.130397","DOIUrl":"10.1016/j.physleta.2025.130397","url":null,"abstract":"<div><div>This paper reports the simultaneous sensing of temperature and magnetic fields using a novel microring resonator waveguide system coupled to a slab waveguide, analysed through the finite element method. The system consists of a slab waveguide coupled to two ring waveguides, where the cladding of one ring is infiltrated with magnetic fluid (MF) and the other with ethanol. The vertical displacement and ring radii are optimised to achieve weak optical coupling between the rings and ensure almost independent resonances. The system demonstrates a linear response to both temperature and magnetic field variations, with high sensitivities of <span><math><mn>175</mn><mspace></mspace><msup><mrow><mtext>pm mT</mtext></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math></span> and <span><math><mn>162</mn><mspace></mspace><mtext>pm</mtext><mspace></mspace><mmultiscripts><mrow><mtext>C</mtext></mrow><none></none><mrow><mo>−</mo><mn>1</mn></mrow><mprescripts></mprescripts><none></none><mrow><mo>∘</mo></mrow></mmultiscripts></math></span>, respectively. Additionally, the device exhibits high-quality factors and figures of merit, making it highly suitable for compact, precise dual-sensing applications in environmental monitoring and space applications.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130397"},"PeriodicalIF":2.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511658","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