Journal of Optics最新文献

Design and fabrication of polarization independent LCoS phase modulators with polymer waveplate and analog driving 利用聚合物波板和模拟驱动设计与制造偏振无关的 LCoS 相位调制器

IF 2.1 4区物理与天体物理

Journal of Optics Pub Date : 2024-09-18 DOI: 10.1088/2040-8986/ad7964

Isaac Zachmann, Qirui Zhang, Anastasiia Svanidze, Lianhua Ji and Chongchang Mao

引用次数: 0

Optical microscope with nanometer longitudinal resolution based on a Linnik interferometer 基于 Linnik 干涉仪的纳米级纵向分辨率光学显微镜

IF 2.1 4区物理与天体物理

Journal of Optics Pub Date : 2024-09-18 DOI: 10.1088/2040-8986/ad77e3

Sergei V Anishchik and Marcos Dantus

引用次数: 0

Dynamic tailoring large-area surface plasmon polariton excitation 动态定制大面积表面等离子体极化子激发

IF 2.1 4区物理与天体物理

Journal of Optics Pub Date : 2024-09-18 DOI: 10.1088/2040-8986/ad77e4

Aldo Peña Ramírez, Tingting Zhai, Rafael Salas-Montiel and Víctor Ruiz Cortés

引用次数: 0

Intrinsic angular momentum, spin and helicity of higher-order Poincaré modes 高阶庞加莱模式的内在角动量、自旋和螺旋度

IF 2.1 4区物理与天体物理

Journal of Optics Pub Date : 2024-09-17 DOI: 10.1088/2040-8986/ad7514

M Babiker, K Koksal, V E Lembessis and J Yuan

{"title":"Intrinsic angular momentum, spin and helicity of higher-order Poincaré modes","authors":"M Babiker, K Koksal, V E Lembessis and J Yuan","doi":"10.1088/2040-8986/ad7514","DOIUrl":"https://doi.org/10.1088/2040-8986/ad7514","url":null,"abstract":"The availability of coherent sources of higher order Poincaré optical beams have opened up new opportunities for applications such as in the optical trapping of atoms and small particles, the manipulation of chirally-sensitive systems and in improved encoding schemes for broad-bandwidth communications. Here we determine the intrinsic properties of integer order Poincaré Laguerre–Gaussian (LG) modes which have so far neither been evaluated, nor their significance highlighted. The theoretical framework we adopt here is both novel and essential because it emphasises the crucial role played by the normally ignored axial components of the twisted light fields of these modes. We show that the inclusion of the axial field components enables the intrinsic properties of the Poincaré modes, notably their angular momentum, both spin and orbital as well as their helicity and chirality, to be determined. We predict significant enhancements of the intrinsic properties of these modes when compared with those due to the zero order LG modes. In particular, we show that higher order LG Poincaré modes exhibit super-chirality and, significantly so, even in the case of the first order m = 1.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"1 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Multidimensional dynamic control of optical skyrmions in graphene–chiral–graphene multilayers 石墨烯-手性-石墨烯多层中光学天幕的多维动态控制

IF 2.1 4区物理与天体物理

Journal of Optics Pub Date : 2024-09-17 DOI: 10.1088/2040-8986/ad78e7

Shuo Zhu, Xinrui Lei, Xi Shen, Haifeng Hu, Ni Zhang and Qiwen Zhan

{"title":"Multidimensional dynamic control of optical skyrmions in graphene–chiral–graphene multilayers","authors":"Shuo Zhu, Xinrui Lei, Xi Shen, Haifeng Hu, Ni Zhang and Qiwen Zhan","doi":"10.1088/2040-8986/ad78e7","DOIUrl":"https://doi.org/10.1088/2040-8986/ad78e7","url":null,"abstract":"Optical skyrmions are topological quasiparticles with a complex vectorial field structure. Their associated characteristics of ultra-small, ultra-fast and topological protection have great application prospects in high density data storage, light matter interaction and optical communication. At present, the research of optical skyrmions is still in its infancy, where the construction and flexible regulation of different topological textures are current research hotspot. Here, we combine the twist degree of freedom of materials and optical skyrmions. Based on graphene–chiral–graphene multilayers structure, we demonstrate the field mode symmetry and hybridization to form Bloch-type graphene plasmons skyrmion lattice. At the same time, by changing chirality parameter, the Fermi energy of graphene and the phase of incident light, multidimensional control of Bloch-type optical skyrmions can be realized. Our work demonstrated that the properties of materials provide the additional dimensions to regulate the topological states, and the combination of different materials structures provides the possibility for dynamic construction and manipulation of multiple topological states, which is expected to find applications in integrated nanophotonics devices.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"23 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Dark field photon scattering state measurements from bumps on a gold nanofilm 从金纳米薄膜上的凸起测量暗场光子散射状态

IF 2.1 4区物理与天体物理

Journal of Optics Pub Date : 2024-09-16 DOI: 10.1088/2040-8986/ad7513

Abbas Nasir, Hongze Wang, Xuefeng Liu and Jichuan Xiong

引用次数: 0

Optical phase image encryption using stokes parameters and singular value decomposition 利用斯托克斯参数和奇异值分解进行光学相位图像加密

IF 2.1 4区物理与天体物理

Journal of Optics Pub Date : 2024-09-16 DOI: 10.1088/2040-8986/ad77e2

Harsh Vardhan, Aswathi K Sivarajan, Sakshi, Salla Gangi Reddy and Ravi Kumar

{"title":"Optical phase image encryption using stokes parameters and singular value decomposition","authors":"Harsh Vardhan, Aswathi K Sivarajan, Sakshi, Salla Gangi Reddy and Ravi Kumar","doi":"10.1088/2040-8986/ad77e2","DOIUrl":"https://doi.org/10.1088/2040-8986/ad77e2","url":null,"abstract":"In this paper, we propose an optical asymmetric phase image encryption method in which the vectorial light field is used to encode the data. In transverse plane, the vectorial light field has spatially varying polarization distributions where we are allowed to have a greater number of degrees of freedom. In this scheme, the input image is first phase encoded and then modulated by a phase encrypting key, synthesized from the speckles obtained by the scattering of Hermite–Gaussian beams. The modulated image is further processed using fractional Fourier transform with a specific order (α). A pixel scrambling operator is utilized to increase the randomness to further enhance the security and singular value decomposition approach is employed to add the nonlinearity in the encryption process. Now, the stokes parameters, i.e. S1 and S2 are calculated using the light intensities correspond to different polarizations. S1 is used as the encrypted image for transmission and S2 is reserved as one of the private decryption keys. The robustness of the proposed technique is tested against various existing attacks, such as known plaintext attack, chosen plaintext attack, and contamination attacks. Numerically simulated results validate the effectiveness and efficiency of the proposed method.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"38 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Optimization of polarization spectroscopy signal for laser-frequency stabilization 优化偏振光谱信号，实现激光频率稳定

IF 2.1 4区物理与天体物理

Journal of Optics Pub Date : 2024-09-15 DOI: 10.1088/2040-8986/ad7516

Rajni Bala, Joyee Ghosh and Vivek Venkataraman

引用次数: 0

A theoretical study of quantum coherence and plasmon-enhanced diffraction in practical hybrid systems including semiconductor quantum dots and metallic nanoparticles 包括半导体量子点和金属纳米粒子在内的实用混合系统中的量子相干性和等离子体增强衍射理论研究

IF 2.1 4区物理与天体物理

Journal of Optics Pub Date : 2024-09-11 DOI: 10.1088/2040-8986/ad7740

Zeynab Maleki and Tayebeh Naseri

引用次数: 0

Highly coherent mid-infrared wideband supercontinuum generation by a silica cladded silicon nitride core buried waveguide 通过硅包覆氮化硅芯埋入式波导产生高相干中红外宽带超连续真空

IF 2.1 4区物理与天体物理

Journal of Optics Pub Date : 2024-09-09 DOI: 10.1088/2040-8986/ad751a

Somen Adhikary, Dipankar Ghosh and Mousumi Basu

{"title":"Highly coherent mid-infrared wideband supercontinuum generation by a silica cladded silicon nitride core buried waveguide","authors":"Somen Adhikary, Dipankar Ghosh and Mousumi Basu","doi":"10.1088/2040-8986/ad751a","DOIUrl":"https://doi.org/10.1088/2040-8986/ad751a","url":null,"abstract":"Optical waveguides with semiconductor cores are drawing considerable research interest in the domain of supercontinuum (SC) generation in recent times. In this work, we design a square-core silicon nitride buried waveguide with a silica-clad, aiming for a wideband spectrum generation in the mid-IR region when operated at the standard telecommunication wavelength of 1550 nm. Among different such silicon nitride square-core buried waveguides, we propose a typical design with dimensions of 400 nm × 400 nm along its height and width, capable of producing a highly coherent broadband intensity spectrum ranging from 810 nm to 5441 nm after propagating through just a few millimeters of the waveguide. The group velocity dispersion maintains minimal value over a broad wavelength range in the mid-IR region, while the nonlinear coefficient is estimated to be sufficiently high. The nonlinear pulse propagation through such a waveguide leads to achieving an SC spanning over 2.76 octaves, sufficiently broader than previously reported silicon nitride-based waveguides. Furthermore, our calculations confirm the highly coherent nature of the generated SC. To the best of our knowledge, this is the first report of SC generation maintaining a high degree of coherence over such a wide wavelength range in the mid-IR zone using a square-core silicon nitride buried waveguide.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"54 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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