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Coherence phase spectrum analyzer for a randomly fluctuated fractional vortex beam

Photonics Research 2024年第1期12卷 33-39页

作者： ZHUOYI WANG xingyuan lu JIANBO GAO XUECHUN ZHAO QIWEN ZHAN YANGJIAN CAI CHENGLIANG ZHAO School of Physical Science and Technology Soochow UniversitySuzhou 215006China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China Shandong Provincial Engineering and Technical Center of Light Manipulations&Shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250358China Shandong Joint Research Center of Light Manipulation Science and Photonics Integrated Chip of East China Normal University and Shandong Normal University East China Normal UniversityShanghai 200241China

Fractional vortex beams exhibit a higher degree of modulation dimensions than conventional vortices,thus inheriting superior anti-turbulent transmission properties through the incorporation of additional coherence ***,aliasing the mixed modes induced by coherence degradation makes the quantitative measurement of the topological charge in fractional vortex beams *** this study,a coherence phase spectrum was introduced,and experimental demonstrations to quantitatively determine the fractional topological charge of partially coherent fractional vortex beams were *** leveraging the four-dimensional measurement of a partially coherent light field,the source coherence function was inversely reconstructed,and fractional topological charges were determined with high precision by extracting the phase spectrum of the coherence ***–Gaussian,elliptical Gaussian,and plane-wave-fraction vortex beams with various degrees of coherence were used to demonstrate measurement *** proposed method is applicable to X-rays and electron *** has potential applications in optical encryption,high-capacity optical communication,and quantum entanglement.

关键词： function fractional vortex

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Single-shot phase retrieval for randomly fluctuated and obstructed vortex beams

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 72-80页

作者： Hao Zhang Jun’an Zhu xingyuan lu Zhiquan Hu Jianbo Gao Kun Liu Qiwen Zhan Yangjian Cai Chengliang Zhao School of Physical Science and Technology Soochow UniversitySuzhou 215006China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China Shandong Provincial Engineering and Technical Center of Light Manipulations Shandong Provincial Key Laboratory of Optics and Photonic DeviceSchool of Physics and ElectronicsShandong Normal UniversityJinan 250358China Joint Research Center of Light Manipulation Science and Photonic Integrated Chip of East China Normal University and Shandong Normal University East China Normal UniversityShanghai 200241China

Vortex beams with orbital angular momentum play a crucial role in increasing the information capacity in optical *** magnitude of orbital angular momentum determines the ability of information *** practice,a vortex beam can encounter random objects or turbulence during free-space propagation,resulting in information ***,accurately measuring the orbital angular momentum of a randomly fluctuated and obstructed vortex beam is a considerable ***,we propose a single-shot method for the phase retrieval of a randomly fluctuated and obstructed vortex beam by combining the phase-shift theorem and self-reference *** results reveal that the sign and magnitude of the initial orbital angular momentum can be simultaneously determined based on their quantitative relation with the number of coherence singularities on the observation plane,thus addressing the effects of random occlusion and atmospheric *** proposed method considerably improved the accurate decoding of orbital angular momentum information in nonideal freespace optical communications.

关键词： optical vortex phase retrieve orbital angular momentum measurement antiturbulence antidisturbance

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Reversibly Cross-Linking Polyimide and Cyclophosphazene Toward Closed-Loop Recyclable Plastics with High Mechanical Strength,Excellent Flame Retardancy,and Chemical Resistance

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CCS Chemistry 2024年第4期6卷 976-987页

作者： Tingting Guan Xiaohan Wang Xi Zhao xingyuan lu Xiu-Li Wang Yu-Zhong Wang Junqi Sun State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012 The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE) National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan)State Key Laboratory of Polymer Materials EngineeringCollege of ChemistrySichuan UniversityChengdu 610064

Traditional flame-retardant plastics are technically difficult to chemically *** development of newtypes of flame-retardant plastics that are intrinsically capable of being closed-loop recycled and are sufficiently robust and stable to satisfy their practical application is urgently *** this study,closed-loop recyclable flame-retardant plastics with high mechanical strength and excellent chemical resistance are fabricated by cross-linking amino-terminated polyimide(PI-NH_(2))and aldehyde-terminated cyclophosphazene(CP-CHO)with imine *** resultant flame-retardant plastic,which is denoted as PI-CP,exhibits a tensile strength of∼115.6 MPa,Young’s modulus of∼2.5 GPa,and glass transition temperature of 316°*** the PI-CP plastic,the imine bonds are isolated within hydrophobic microenvironments generated by the rigid and hydrophobic polyimide chains and the benzene ring of *** a result,the PI-CP plastics are highly stable in highly acidic and basic aqueous solutions and other commonly used organic *** PI-CP plastic shows outstanding flame retardancy with a limiting oxygen index value of 48.8%.More importantly,the PI-CP plastic can be depolymerized to generate the original PI-NH_(2)and CPCHO monomers in high yields(∼97%)and *** recovered monomers can be used to refabricate the original plastics,establishing highly efficient polymer-monomer-polymer circulation and a sustainable plastics economy.

关键词： closed-loop recyclable plastics recyclable polymers reversibly cross-linked polymers flame retardancy supramolecular polymers

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以高质量高等教育体系助推高等教育强国建设——第60届中国高等教育博览会“高等教育强国建设大会”综述

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中国人民大学教育学刊 2024年第1期 22-27页

作者：路馨苑耿孟茹中国人民大学教育学院北京100872

建设教育强国,龙头是高等教育。在第60届中国高等教育博览会“高等教育强国建设大会”上,与会领导和专家汇聚一堂,总结我国建设教育强国的进步和成就,分析面临的形势和亟待解决的问题,探讨如何发挥高等教育功能优势,为教育强国建设提供... 详细信息

建设教育强国,龙头是高等教育。在第60届中国高等教育博览会“高等教育强国建设大会”上,与会领导和专家汇聚一堂,总结我国建设教育强国的进步和成就,分析面临的形势和亟待解决的问题,探讨如何发挥高等教育功能优势,为教育强国建设提供助力。与会领导和专家普遍认为,从教育大国到教育强国是一个系统性跃升和质变,应深刻认识教育强国核心要义,以高质量高等教育体系建设为抓手发挥高等教育龙头作用;全面理解教育强国时代特征,扎根中国大地建设中国特色社会主义教育强国;准确把握高等教育使命方向,助力推动教育强国、科技强国、人才强国建设。

关键词：教育强国高等教育强国高质量高等教育体系

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基于可低温加工SEBS的发泡母粒及微发泡热塑性弹性体的制备

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塑料工业 2024年第3期52卷 27-33页

作者：吕鹏飞王超陆星远邵树仁张爱民中国石油化工股份有限公司北京化工研究院燕山分院橡塑新型材料合成国家工程研究中心北京102500 四川大学高分子国家重点实验室四川成都610065

以可低温加工的氢化苯乙烯-丁二烯嵌段共聚物(SEBS)为基体,将偶氮二甲酰胺(AC)发泡剂、助发泡剂和表面活性剂制备成基于SEBS的发泡母粒,并采用双螺杆挤出机将发泡母粒与动态硫化三元乙丙橡胶(EPDM)/聚丙烯(PP)热塑性弹性体材料(TPE)共... 详细信息

以可低温加工的氢化苯乙烯-丁二烯嵌段共聚物(SEBS)为基体,将偶氮二甲酰胺(AC)发泡剂、助发泡剂和表面活性剂制备成基于SEBS的发泡母粒,并采用双螺杆挤出机将发泡母粒与动态硫化三元乙丙橡胶(EPDM)/聚丙烯(PP)热塑性弹性体材料(TPE)共混熔融挤出,制备了微发泡TPE材料。研究了SEBS引入量与发泡母粒添加量对微发泡TPE样品的密度、拉伸性能以及泡孔形貌的影响。结果表明,当SEBS的质量分数低于6%,发泡母粒的质量分数为3%时,制备的微发泡TPE材料具有较低的密度、较高的拉伸性能,且泡孔规整度达到最优。

关键词：氢化苯乙烯-丁二烯嵌段共聚物发泡母粒偶氮二甲酰胺发泡剂动态硫化热塑性弹性体挤出发泡

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Economical generation of high-quality optical vortices with gradual-width Fermat spiral slit mask

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Science China(Physics,Mechanics & Astronomy) 2023年第4期66卷 75-83页

作者： Qi Huang xingyuan lu Hao Zhang Zhuoyi Wang Yuanjie Yang Qiwen Zhan Yangjian Cai ChengLiang Zhao School of Physical Science and Technology Soochow UniversitySuzhou 215006China School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China Shandong Provincial Engineering and Technical Center of Light Manipulations&Shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250358China

A general model for creating an optical vortex using a variable-width Fermat spiral slit(FSS)mask was *** generated optical vortex demonstrates much better quality than those produced by slits with a uniform *** depth of focus was nearly doubled,which can be explained by discretizing the gradual-width *** demonstrate the generation robustness,the slits were printed on a transparent slide,and an output vortex beam with greater than 98%intensity purity was *** the high quality and simplicity of this vortex generation method,its analysis and generation scheme are expected to be extended to generation of plasmonic vortices and short-wavelength light sources such as X-rays and electron *** of highquality optical vortex beams at an almost negligible cost will make investigation much more accessible.

关键词： optical vortex gradual-width Fermat spiral slit high quality economical generation

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Noniterative spatially partially coherent diffractive imaging using pinhole array mask

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Advanced Photonics 2019年第1期1卷 84-91页

作者： xingyuan lu Yifeng Shao Chengliang Zhao Sander Konijnenberg Xinlei Zhu Ying Tang Yangjian Cai HPaul Urbach Soochow University School of Physical Science and TechnologySuzhouChina Delft University of Technology Optics Research GroupDelftNetherlands Shandong Normal University School of Physics and ElectronicsCenter of Light Manipulation and ApplicationJinanChina

We propose and experimentally demonstrate a noniterative diffractive imaging method for reconstructing the complex-valued transmission function of an object illuminated by spatially partially coherent light from the far-field diffraction *** method is based on a pinhole array mask,which is specially designed such that the correlation function in the mask plane can be obtained directly by inverse Fourier transforming the diffraction *** to the traditional iterative diffractive imaging methods using spatially partially coherent illumination,our method is noniterative and robust to the degradation of the spatial coherence of the *** addition to diffractive imaging,the proposed method can also be applied to spatial coherence property characterization,e.g.,free-space optical communication and optical coherence singularity measurement.

关键词： partial coherence coherent diffractive imaging noniterative method pinhole array mask

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Information‑entropy enabled identifying topological photonic phase in real space

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Frontiers of Optoelectronics 2024年第2期17卷 1-9页

作者： Rui Ma Qiuchen Yan Yihao luo Yandong Li xingyuan Wang Cuicui lu Xiaoyong Hu Qihuang Gong State Key Laboratory for Mesoscopic Physics&Department of Physics Collaborative Innovation Center of Quantum Matter&Frontiers Science Center for Nano‑OptoelectronicsPeking UniversityBeijing 100871China The MOE Key Laboratory of Weak‑Light Nonlinear Photonics TEDA Applied Physics Institute and School of PhysicsNankai UniversityTianjin 300457China College of Mathematics and Physics Beijing University of Chemical TechnologyBeijing 100029China Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic SystemsSchool of PhysicsBeijing Institute of TechnologyBeijing 100081China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Hefei National Laboratory Hefei 230088China Beijing Academy of Quantum Information Sciences Beijing 100193China

The topological photonics plays an important role in the fields of fundamental physics and photonic *** traditional method of designing topological system is based on the momentum space,which is not a direct and convenient way to grasp the topological properties,especially for the perturbative structures or coupled ***,we propose an interdisciplinary approach to study the topological systems in real space through combining the information entropy and topological *** a proof of concept,the Kagome model has been analyzed with information *** reveal that the bandgap closing does not correspond to the topological edge state *** method can be used to identify the topological phase conveniently and directly,even the systems with perturbations or *** a promotional validation,Su-Schrieffer-Heeger model and the valley-Hall photonic crystal have also been studied based on the information entropy *** work provides a method to study topological photonic phase based on information theory,and brings inspiration to analyze the physical properties by taking advantage of interdisciplinarity.

关键词： Information entropy Kagome model Topological photonic phase

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Polymeric Complex Nanoparticles Enable the Fabrication of Mechanically Superstrong and Recyclable Poly(aryl ether sulfone)-based Polymer Composites

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CCS Chemistry 2020年第1期2卷 524-532页

作者： xingyuan lu Yuchao luo Yixuan Li Chunyang Bao Xiaohan Wang Ni An Guibin Wang Junqi Sun State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012(China) Key Laboratory of High Performance Plastics Ministry of EducationCollege of ChemistryJilin UniversityChangchun 130012(China)

It is a long-term pursuit,and also,a challenge to significantly improve the mechanical strength of thermoplastic polymers using readily dispersed polymers as *** this study,we demonstrated that in situ formed carboxylic acid-functionalized poly(aryl ether sulfone)(PAES-COOH)/polyvinylpyrrolidone(PVPON)complex nanoparticles can significantly enhance the mechanical strength of PAES-COOH by mixing PAES-COOH with a small fraction of *** PAES-COOH/PVPON10%composite,which contained∼10 wt%PVPON,exhibited a tensile strength of∼104.8 MPa and Young’s modulus of∼932.2 MPa,which were∼2.0 and∼1.7 times higher than those of the PAES-COOH,*** PAES-COOH/PVPON nanoparticles which were uniformly dispersed in PAES-COOH matrices and had strong hydrogen-bonding interactions with PAES-COOH,served as nanofillers to reinforce the mechanical strength of the *** PAES-COOH/PVPON_(10%)composites possessed excellent solvent-assisted healability,and the fractured composites could be healed to restore their original mechanical ***,the PAES-COOH/PVPON_(10%)composites could be recycled multiple times,and yet retained their shape integration and their original mechanical strength.

关键词： polymer complexes supramolecular chemistry materials science high-strength materials recyclable materials

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基于人岗匹配理论的招聘策略分析

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山西经济管理干部学院学报 2022年第3期30卷 7-11页

作者：卢星远山西经济管理干部学院山西太原030024

文章基于人岗匹配理论的最新内涵,从员工与岗位、团队以及组织之间的深层次多元化匹配角度,提出了组织招聘的新策略,即完善组织特征分析,将工作分析与胜任力素质分析结合。在此基础上文章构建了胜任素质模型并设计甄选测评工具,进而帮... 详细信息

文章基于人岗匹配理论的最新内涵,从员工与岗位、团队以及组织之间的深层次多元化匹配角度,提出了组织招聘的新策略,即完善组织特征分析,将工作分析与胜任力素质分析结合。在此基础上文章构建了胜任素质模型并设计甄选测评工具,进而帮助组织吸纳契合度更高的员工。

关键词：人岗匹配招聘胜任力素质

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