Applied Physics B最新文献

Enhancing photons transport via space-dependent hopping in zig–zag lattice: modulated wave gain 通过之字形晶格中的空间依赖跳变增强光子传输：调制波增益

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-12 DOI: 10.1007/s00340-025-08447-6

Hamdy I. Abdel-Gawad

{"title":"Enhancing photons transport via space-dependent hopping in zig–zag lattice: modulated wave gain","authors":"Hamdy I. Abdel-Gawad","doi":"10.1007/s00340-025-08447-6","DOIUrl":"10.1007/s00340-025-08447-6","url":null,"abstract":"<div><p>Recent studies have extensively explored fixed hopping in zig–zag lattices. However, material heating effects can induce inhomogeneity, significantly altering the lattice’s shape and behavior. Motivated by this, we introduce a novel approach by constructing both discrete and continuum models for a zig–zag lattice with space-dependent hopping between two-nearest-neighbor interactions. The primary objective of this study is to investigate the impact of inhomogeneity on photon transport characteristics. To achieve this, we derive exact solutions for the inhomogeneous continuum model using the extended unified method. Our findings reveal key insights, including a significant enhancement in photon transport within lattices featuring variable hopping. Furthermore, we explore the influence of this property on nonlinear optical wave structures, uncovering various topological solitons such as clustered zig–zag solitons near the origin, dark solitons, and spiky tree-like structures with leaf-like features. Additionally, we examine modulated wave-amplitude gain, providing a deeper understanding of and control over nonlinear optical wave behavior.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938642","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

Convolutional neural network for coded metasurface inverse design 卷积神经网络在编码超曲面逆设计中的应用

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-10 DOI: 10.1007/s00340-025-08475-2

Yong Tao, Xudong Qiu, Fuhai Liu, Jianfeng Xu, Peng Xu, Yanling Li, Manna Gu, Ying Tian

引用次数: 0

Temperature-insensitive U-shaped liquid level sensor based on single-mode fiber cascaded with double spheres 基于双球级联单模光纤的温度不敏感u型液位传感器

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-10 DOI: 10.1007/s00340-025-08478-z

Muhua Wang, Zhengrong Tong, Weihua Zhang, Danyang Liu, Yixi Liu, Xue Wang

引用次数: 0

Optimization of a plasmonic biosensor using BSA layer for colorectal cancer detection under optimum radiation damping 基于BSA层的等离子体生物传感器在最佳辐射阻尼下的结肠直肠癌检测优化

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-10 DOI: 10.1007/s00340-025-08483-2

Sudhir Shukla, D. K. Dwivedi, Pooja Lohia

{"title":"Optimization of a plasmonic biosensor using BSA layer for colorectal cancer detection under optimum radiation damping","authors":"Sudhir Shukla, D. K. Dwivedi, Pooja Lohia","doi":"10.1007/s00340-025-08483-2","DOIUrl":"10.1007/s00340-025-08483-2","url":null,"abstract":"<div><p>A theoretical and simulation based plasmonic sensor is proposed for the detection of colorectal cancer in the near infrared (NIR) region. Plasmonic metal made of silver (Ag) is considered at the top of a calcium fluoride (CaF2) prism. The top layer is bovine serum albumin (BSA) which will act as linker for colorectal tissues. The goal of the simulation is to maximize radiative damping and attain optimum radiation damping (ORD) conditions using Ag–KTaO<sub>3</sub>–BSA heterojunction to obtain highest possible figure of merit (FOM). The optimization process involves the variation of Ag and KTaO<sub>3</sub> layer thicknesses (i.e. d<sub>M</sub> and d<sub>A</sub> respectively) as well as the operating wavelength (λ) in the NIR (nearby 1000 nm) using 2D simulation approach. After concurrent variation of thicknesses, a high value of FOM about 6551 RIU<sup>− 1</sup> at d<sub>1</sub> = 47.7 nm, d<sub>2</sub> = 2.4 nm and λ = 1006.8 nm has been obtained. This can be treated as a condition of ORD. Power loss ratio (PLR), electric field enhancement factor (FEF) and Rayleigh scattering factor (RSF) are calculated to be 3.134, 1.0792 and 0.97 μm<sup>− 4</sup> respectively. Overall sensor performance, examined by combined performance factor (CPF) for the proposed sensor is 22684.02 µm<sup>4</sup>/RIU.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930127","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

Optimisation of pockels effect in poled amorphous waveguides for efficient electro-optic modulation 极化非晶波导中高效电光调制的口袋效应优化

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-09 DOI: 10.1007/s00340-025-08477-0

Sirawit Boonsit, Vasileios Mourgelas, Lara Karam, Milos Nedeljkovic, Nadege Courjal, Marc Dussauze, Ganapathy Senthil Murugan

{"title":"Optimisation of pockels effect in poled amorphous waveguides for efficient electro-optic modulation","authors":"Sirawit Boonsit, Vasileios Mourgelas, Lara Karam, Milos Nedeljkovic, Nadege Courjal, Marc Dussauze, Ganapathy Senthil Murugan","doi":"10.1007/s00340-025-08477-0","DOIUrl":"10.1007/s00340-025-08477-0","url":null,"abstract":"<div><p>The induced second-order optical nonlinearity (SONL) in amorphous materials, such as silica glasses, has been extensively studied but remains significantly weaker compared to crystalline materials. Recent advancements demonstrated a remarkable induced <span>(chi_{xxx}^{left( 2 right)})</span> value of 29 pm/V in amorphous sodo-niobate thin films (Na<sub>2</sub>O:Nb<sub>2</sub>O<sub>5</sub>) using a patterned thermal poling technique. In contrast to standard electro-optic single-crystalline materials, such as lithium niobate, thermally poled amorphous thin films exhibit a unique spatial distribution of <span>(chi^{left( 2 right)})</span> nonlinearity, due to the structured electrodes poling process. This necessitates an advanced modelling approach tailored to poled amorphous materials. This study presents a theoretical analysis of the sodo-niobate dielectric permittivity tensor, then applies it to the design of electro-optic modulators using numerical simulations, to identify the optimal device geometry, device orientation, fabrication process, and poling configuration. Experimental parameters were included in the simulations to ensure design compatibility with fabrication. The optimized device configuration achieved a voltage-length product (V<sub>π</sub>L) of 3.87 V.cm. These designs establish poled sodo-niobate waveguides on SiO<sub>2</sub> as a promising amorphous platform with a significant induced SONL response and practical fabrication potential for future electro-optic modulator applications. </p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-025-08477-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930123","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

Spatially-resolved atomic oxygen absorption and emission measurements in the Hypersonic Materials Environmental Test System 高超声速材料环境试验系统中空间分辨原子氧吸收和发射测量

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-09 DOI: 10.1007/s00340-025-08476-1

Tal Schwartz, Scott C. Splinter, Neil S. Rodrigues, Paul M. Danehy, Killian E. Samuels, Christopher B. Kostyk, Ronald K. Hanson

{"title":"Spatially-resolved atomic oxygen absorption and emission measurements in the Hypersonic Materials Environmental Test System","authors":"Tal Schwartz, Scott C. Splinter, Neil S. Rodrigues, Paul M. Danehy, Killian E. Samuels, Christopher B. Kostyk, Ronald K. Hanson","doi":"10.1007/s00340-025-08476-1","DOIUrl":"10.1007/s00340-025-08476-1","url":null,"abstract":"<div><p>A tunable diode laser absorption spectroscopy sensor and a high-speed camera measuring narrow-band emission are deployed at the NASA Langley Hypersonic Materials Environmental Test System, a hypervelocity arc-heated tunnel. Both sensors target electronically-excited atomic oxygen. The sensors are used in conjunction to measure bulk translational temperatures (from 500 to 3000 K) and number densities of the <span>(^5S_2)</span> excited state of atomic oxygen (from near 0 to <span>(5times 10^{16})</span> m<span>(^{-3})</span>) in the arc-heated freestream at arc currents ranging from 100 to 250 Amperes, and with varying feed-gas mixtures composed of diatomic oxygen, diatomic nitrogen, and argon. Additionally, spatially-resolved diode laser absorption measurements of the same atomic oxygen energy-state population are collected near a silicon carbide test sample via an inverse Abel transform. Significant temporal flow transients are detected in the freestream on a 60-Hz timescale. These transients also propagate into the near-model shock layer. Further, qualitative agreement is obtained between absorption- and emission-based sensors. This study provides a quantitative, spatiotemporally-resolved dataset for future comparisons to computational models of the facility flowfield. The study also represents the first deployment of tunable diode laser absorption spectroscopy sensors in the Hypersonic Materials Environmental Test System.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925636","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

Biomimetic moth-eye structures fabricated by double-exposure lithography using coplanar three-beam laser interference 用共面三束激光干涉双曝光光刻制备仿生蛾眼结构

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-09 DOI: 10.1007/s00340-025-08474-3

Litong Dong, Xiangyu Li, Mengnan Liu, Lu Wang, Zuobin Wang, Dayou Li

引用次数: 0

Quantum entanglement in two-photon Rabi Stark model 双光子Rabi Stark模型中的量子纠缠

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-08 DOI: 10.1007/s00340-025-08470-7

Zakaria Boutakka, Zoubida Sakhi, Mohamed Bennai

{"title":"Quantum entanglement in two-photon Rabi Stark model","authors":"Zakaria Boutakka, Zoubida Sakhi, Mohamed Bennai","doi":"10.1007/s00340-025-08470-7","DOIUrl":"10.1007/s00340-025-08470-7","url":null,"abstract":"<div><p>In this study, we delve into the critical quantum phenomena of the two-photon Rabi-Stark model (<i>2pRSM</i>), thereby establishing a foundational basis for the development of more effective and scalable quantum sensing technologies. Our analysis explores how variations in coupling strengths and Stark coupling parameters influence the quantum dynamics within the system. Through a detailed numerical investigation, we uncover the phenomenon of spectral collapse in the <i>2pRSM</i>, analyzing its dependence on the qubit-cavity field coupling strength to provide further physical insights. We further employ the Wigner function as a tool to visualize and quantify the system’s non-classical characteristics, highlighting the ground state’s negativity as an indicator of its quantum characteristics. Additionally, the dynamics of entanglement are rigorously investigated across a range of Stark coupling strengths using von Neumann entropy, thereby emphasizing the pivotal role of Stark interactions in modulating quantum entanglement. By clarifying these fundamental quantum features, our work bridges theoretical insights with practical implications, establishing a solid foundation for advancements in quantum information science and enabling transformative applications in quantum sensing and related fields.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919270","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

Randomness in quantum random number generator from vacuum fluctuations with source-device-independence 源-设备无关真空涨落量子随机数发生器的随机性

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-07 DOI: 10.1007/s00340-025-08471-6

Megha Shrivastava, Mohit Mittal, Isha Kumari, Venkat Abhignan

引用次数: 0

Design of a measurement system for the radius of curvature, thickness, and refractive index of spherical transparent materials 球形透明材料曲率半径、厚度和折射率测量系统的设计

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-07 DOI: 10.1007/s00340-025-08469-0

Fan-Hsi Hsu, Chien-Sheng Liu, Yi-Chi Li

{"title":"Design of a measurement system for the radius of curvature, thickness, and refractive index of spherical transparent materials","authors":"Fan-Hsi Hsu, Chien-Sheng Liu, Yi-Chi Li","doi":"10.1007/s00340-025-08469-0","DOIUrl":"10.1007/s00340-025-08469-0","url":null,"abstract":"<div><p>To address the limitations of current technologies and equipment in simultaneously measuring multiple parameters of spherical transparent materials, this study proposes an innovative optical measurement system to simultaneously measure the radius of curvature, thickness, and refractive index of spherical transparent materials. While existing methods for measuring spherical transparent materials can independently determine the radius of curvature, thickness, and refractive index, they are typically costly and limited in scope. Using image processing techniques, such as the maximum value and centroid methods, the positions of reflected and refracted light spots under different incident beam angles are extracted for analysis. Moreover, the skew ray tracing method combined with homogeneous coordinate transformation matrices is employed to establish measurement algorithms. Furthermore, simulations and experimental verifications are also conducted. According to the verification results, the accuracy and measurement ranges of each parameter are as follows: radius of curvature (100–940 mm, ± 0.01 mm), central thickness (1–10 mm, ± 0.0001 mm), and refractive index (1–3.6, ± 0.001). Finally, it is worth emphasizing that the proposed robust and cost-effective measurement system achieves high accuracy and stability.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143913948","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