Results in Optics最新文献_第6页

Non-local quantum interference of deterministically separated photons 决定论分离光子的非局域量子干涉

Results in Optics Pub Date : 2025-06-23 DOI: 10.1016/j.rio.2025.100848

Kiran Bajar , Vikas S. Bhat , Rounak Chatterjee , Tabish Qureshi , Sushil Mujumdar

{"title":"Non-local quantum interference of deterministically separated photons","authors":"Kiran Bajar , Vikas S. Bhat , Rounak Chatterjee , Tabish Qureshi , Sushil Mujumdar","doi":"10.1016/j.rio.2025.100848","DOIUrl":"10.1016/j.rio.2025.100848","url":null,"abstract":"<div><div>Quantum entanglement enables a wide range of fundamental studies and practical applications in quantum optics, computing, and communication. In this work, we investigate two-photon interference using position-momentum entangled photons generated via Type-II Spontaneous Parametric Down-Conversion (SPDC). By employing a double-slit setup, we explore two distinct quantum interference phenomena: the Hanbury Brown and Twiss (HBT) effect, where the photons pass through different slits, and NOON-state interference, where both photons traverse the same slit. We deterministically separate the two photons based on their orthogonal polarizations and demonstrate that both interference effects persist despite their distinguishability at the detectors. This result goes beyond the conventional understanding of two-photon interference and reveals a novel nonlocal HBT effect, where interference occurs even in the absence of spatial overlap, and is rooted in entanglement. Our findings deepen the understanding of quantum interference and open new avenues for applications in quantum optics and precision measurement.</div></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"21 ","pages":"Article 100848"},"PeriodicalIF":0.0,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Combination scattering and infrared absorption spectra of cyclohexane molecule 环己烷分子的联合散射和红外吸收光谱

Results in Optics Pub Date : 2025-06-13 DOI: 10.1016/j.rio.2025.100855

Shavkat Otajonov , Shakhlo Allaquliyeva , Husan Eshkuvatov , Nuraddin Abdullayev , Shohida Sodiqova , Dilfuza Begmatova

引用次数: 0

Dark soliton solutions of cubic-quartic non-linear Schrödinger equation via Sumudu HPM 三四次非线性Schrödinger方程的Sumudu HPM暗孤子解

Results in Optics Pub Date : 2025-06-13 DOI: 10.1016/j.rio.2025.100857

Mamta Kapoor

{"title":"Dark soliton solutions of cubic-quartic non-linear Schrödinger equation via Sumudu HPM","authors":"Mamta Kapoor","doi":"10.1016/j.rio.2025.100857","DOIUrl":"10.1016/j.rio.2025.100857","url":null,"abstract":"<div><div>This research provides study about the cubic-quartic nonlinear Schrödinger equation (CQNLSE), a basic mathematical model with applications in nonlinear optics, plasma physics, and Bose-Einstein condensates. Accurate solutions to such equations are important to understand the behavior of nonlinear waves, including formation of dark solitons. Traditional numerical methods contain discretization and linearization errors, which limits their accuracy and efficiency. To overcome such challenges, a novel hybrid semi-analytical method is proposed in this study, named as Sumudu-HPM, which combines the Sumudu transform with the homotopy perturbation method (HPM). The Sumudu transform simplifies tackling of initial conditions and converts governing equation into an algebraic form, while HPM generates a recursive approximation to the solution. This hybrid approach preserves the nonlinearity of the system without discretization or linearization. The fetched semi-analytical dark soliton solutions claim excellent agreement with exact solutions across a wide range of time levels, demonstrating accuracy, efficiency, and robustness of proposed method.</div><div>The key novelty of this work is in the application of Sumudu-HPM approach to solve cubic-quartic nonlinear Schrödinger equation, which bridges the gap between transform-based techniques and perturbation methods for complex nonlinear wave models. The proposed method provides a computationally efficient, stable, and accurate prototype to tackle highly nonlinear partial differential equations, which makes it a valuable tool for researchers across nonlinear science, engineering, and applied mathematics. The main novelty of this work is to develop and implement an efficient semi-analytical technique which is free from discretization error and is computationally efficient.</div></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"21 ","pages":"Article 100857"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Semi analytical technique implementation upon 4th-order Schrödinger equations with cubic–quintic nonlinearity 具有三次五次非线性的四阶Schrödinger方程的半解析技术实现

Results in Optics Pub Date : 2025-06-09 DOI: 10.1016/j.rio.2025.100846

Mamta Kapoor

{"title":"Semi analytical technique implementation upon 4th-order Schrödinger equations with cubic–quintic nonlinearity","authors":"Mamta Kapoor","doi":"10.1016/j.rio.2025.100846","DOIUrl":"10.1016/j.rio.2025.100846","url":null,"abstract":"<div><div>Higher-order nonlinear Schrödinger equations are frequently analyzed as a result of research into nonlinear wave mechanics in intricate physical systems. In this work, the <span><math><mrow><msup><mn>4</mn><mrow><mi>th</mi></mrow></msup></mrow></math></span>-order Schrödinger equation with cubic-quintic nonlinearity is solved using semi-analytical method named Shehu HPM. Higher-order dispersive effects are considered by <span><math><mrow><msup><mn>4</mn><mrow><mi>th</mi></mrow></msup></mrow></math></span>-order components, and equilibrium between self-focusing and saturation events in nonlinear media is modeled by the cubic–quintic nonlinearity. The intricate interaction of higher-order components with nonlinearity is frequently too complex for traditional numerical methods to handle, requiring reliable and precise semi-analytical techniques. The fetched results demonstrate exceptional agreement between exact and approximated solutions, validated through rigorous graphical compatibility analysis. The success of this approach underscores its effectiveness in handling higher-order dispersive and nonlinear terms, offering a reliable alternative to purely numerical techniques.</div></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"21 ","pages":"Article 100846"},"PeriodicalIF":0.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Power optimization of 1:2 and 1:4 photonic crystal based optical power splitters/combiners using machine learning algorithms 基于机器学习算法的1:2和1:4光子晶体光功率分配器/合成器的功率优化

Results in Optics Pub Date : 2025-06-09 DOI: 10.1016/j.rio.2025.100858

Kalyan Kumar Ghosh , Haraprasad Mondal , Himanshu Ranjan Das , Mohammad Soroosh , Sudipta Majumder , Bhargabjyoti Saikia

{"title":"Power optimization of 1:2 and 1:4 photonic crystal based optical power splitters/combiners using machine learning algorithms","authors":"Kalyan Kumar Ghosh , Haraprasad Mondal , Himanshu Ranjan Das , Mohammad Soroosh , Sudipta Majumder , Bhargabjyoti Saikia","doi":"10.1016/j.rio.2025.100858","DOIUrl":"10.1016/j.rio.2025.100858","url":null,"abstract":"<div><div>Optical power splitters play a vital role in signal distribution, network expansion, and both balanced and unbalanced power splitting in cost-efficient fiber optic systems. Similarly, optical power combiners are essential for signal aggregation, upstream transmission, and balanced network design. In this article, we propose the design of two power splitters—3 dB and 6 dB Y-shaped configurations—that also function as power combiners using two-dimensional photonic crystal waveguides. The performance of these devices has been analyzed using the finite difference time domain (FDTD) algorithm, and their operational parameters have been optimized through the K-means clustering and Particle Swarm Optimization algorithms. As a result of this optimization, the devices achieve precise 3 dB and 6 dB power splitting across all output ports with an efficiency of 99 %. Their fast response time (0.4 and 0.5 picoseconds for 3 dB and 6 dB respectively), high power delivery efficiency, precise power splitting/combining capabilities, and Machine Learming (ML) – driven optimization make these splitters/combiners highly suitable for advanced fiber optic networks.</div></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"21 ","pages":"Article 100858"},"PeriodicalIF":0.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molybdenum-doped TiO2 nanoparticles for enhanced photocatalytic activity: a combined experimental and theoretical study 钼掺杂TiO2纳米颗粒增强光催化活性的实验与理论结合研究

Results in Optics Pub Date : 2025-06-09 DOI: 10.1016/j.rio.2025.100850

Hamid Khan , Matiullah Khan , Yaseen Iqbal , Yi Zeng

引用次数: 0

The application of organic materials used in OLED display 有机材料在OLED显示器中的应用

Results in Optics Pub Date : 2025-06-08 DOI: 10.1016/j.rio.2025.100856

Liu Jikang

{"title":"The application of organic materials used in OLED display","authors":"Liu Jikang","doi":"10.1016/j.rio.2025.100856","DOIUrl":"10.1016/j.rio.2025.100856","url":null,"abstract":"<div><div>Based on the advantages of higher luminous efficiency, lower energy consumption and ecological protection, the organic light-emitting diode (OLED) has become a new type of display in mobile OLED device, which was also called as the dream display. Many organic materials including polyimide (PI), photoresist (PR), photosensitive polyimide (PSPI), OLED emissive layer materials, inkjet printing (IJP), optical clear adhesive (OCA) and undercut pixel definition layer (undercut PDL) have been introduced during the manufacturing process of OLED display. The pol less progress (PLP) technology had also been introduced in the OLED display by replacing the polarizer, which also introduced a few new organic materials such as black pixel definition layer (BPDL), black matrix (BM) and color film (CF) and applied in the OLED display. In this paper, the author had a review on the organic materials used in the manufacturing process of an OLED display, which included the application of organic materials used in the array structure, the emissive layer (EL) structure, the display of things (DOT) structure and the new OLED display based on the PLP technology. The application of organic material undercut PDL which was used for forming the protruding spacing columns between pixels to prevent the lateral leakage of current between adjacent pixels was also described detailed in this paper.</div></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"21 ","pages":"Article 100856"},"PeriodicalIF":0.0,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First-time detection of calcium carbonate adulteration in food using advanced hexagonal and pentagonal photonic crystal fibers with silica and Schott glass 利用先进的六方和五方光子晶体光纤与二氧化硅和肖特玻璃首次检测食品中的碳酸钙掺假

Results in Optics Pub Date : 2025-06-08 DOI: 10.1016/j.rio.2025.100851

Lalkrishna S , Subhashish Tiwari , Atul Kumar , Achyutesh Dixit , Ajay Kumar Vyas

{"title":"First-time detection of calcium carbonate adulteration in food using advanced hexagonal and pentagonal photonic crystal fibers with silica and Schott glass","authors":"Lalkrishna S , Subhashish Tiwari , Atul Kumar , Achyutesh Dixit , Ajay Kumar Vyas","doi":"10.1016/j.rio.2025.100851","DOIUrl":"10.1016/j.rio.2025.100851","url":null,"abstract":"<div><div>In this work, we present a novel photonic crystal fiber design for the first-time detection of calcium carbonate concentration using optical fibers. CaCO<sub>3</sub> is a major adulterant in food products such as milk, dairy, flour, spices, confectionery items, and pharmaceutical products. This research analyzes the effect of variable CaCO<sub>3</sub> concentration on various optical parameters like the effective mode index, area, numerical aperture, power fraction, and relative sensitivity of the designed PCF. In our study, we rigorously analyzed four different structures of PCFs using a finite element method. We have numerically analyzed both hexagonal and pentagonal air hole arrangements with two different background materials: Silica and Schott N-BK7 glass. The results indicate that the PCF has higher relative sensitivity and power fraction performance when the air hole lattice is hexagonal, and the background is Silica glass. The results illustrate how PCF geometry and the combination of background materials can make highly sensitive sensors for better food safety applications.</div></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"21 ","pages":"Article 100851"},"PeriodicalIF":0.0,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advanced techniques for optical frequency comb generation using optical modulators: a comprehensive survey 利用光调制器产生光频梳的先进技术综述

Results in Optics Pub Date : 2025-06-08 DOI: 10.1016/j.rio.2025.100849

Azza Abdulla Ali, Ibrahim Khider Eltahir, Elmustafa Sayed Ali

引用次数: 0

Role of laser pulse energy as an effective strategy to improve the signal intensity in laser-induced breakdown spectroscopy 激光脉冲能量作为提高激光诱导击穿光谱信号强度的有效策略

Results in Optics Pub Date : 2025-06-08 DOI: 10.1016/j.rio.2025.100845

Huzaima Azam , Rana Muhammad Shahbaz , Atif Hussain

{"title":"Role of laser pulse energy as an effective strategy to improve the signal intensity in laser-induced breakdown spectroscopy","authors":"Huzaima Azam , Rana Muhammad Shahbaz , Atif Hussain","doi":"10.1016/j.rio.2025.100845","DOIUrl":"10.1016/j.rio.2025.100845","url":null,"abstract":"<div><div>The effect of laser pulse energy on signal enhancement of aluminium (Al) plasma generated by a nanosecond Nd:YAG laser at various delay times was studied. Plasma evolution has been investigated from emission spectrum by varying energy of laser pulse and time delay. It was determined that the intensity of Al spectral lines decreased with increasing laser delay time. Plasma parameters have been extracted from experimentally recorded line profiles of neutral aluminium. The Boltzmann plot and Stark broadening method were used to evaluate, electron temperature (<em>T<sub>e</sub></em>) and electron density (<em>N<sub>e</sub></em>), respectively. It was found that increasing laser energy causes a rapid increase in electron temperature and electron number density of Al plasma. The optimized conditions yielded <em>T<sub>e</sub> = 8488 K</em> and <em>N<sub>e</sub> = 1.96 × 10<sup>16</sup> cm<sup>−3</sup></em> at 160 mJ and 11 µs delay. The study aims to enhance LIBS detection sensitivity by optimizing laser pulse energy. This work uniquely demonstrates how combined tuning of laser energy and delay time can reduce matrix effects and improve signal intensity, offering a practical route to more sensitive LIBS diagnostics. Such optimization may enhance LIBS applications in real-time industrial alloy analysis and environmental monitoring.</div></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"21 ","pages":"Article 100845"},"PeriodicalIF":0.0,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0