检索结果-南通市图书馆

Metalenses phase characterization by multidistance phase retrieval

Light(Science & Applications) 2024年第9期13卷 1898-1907页

作者： Bowen Liu Jialuo Cheng maoxiong zhao Jin Yao Xiaoyuan Liu Shaohu Chen Lei Shi Din Ping Tsai Zihan Geng Mu Ku Chen State Key Laboratory of Surface Physics Key Laboratory of Micro-and Nano-Photonic Structures(Ministry of Education)and Department of PhysicsFudan University200433 ShanghaiChina Department of Electrical Engineering City University of Hong KongKowloonHong Kong SARChina State Key Laboratory of Terahertz and Millimeter Waves City University of Hong KongKowloonHong Kong SARChina Institute for Nanoelectronic Devices and Quantum Computing Fudan University200438 ShanghaiChina Collaborative Innovation Center of Advanced Microstructures Nanjing University210093 NanjingJiangsuChina Shanghai Research Center for Quantum Sciences 201315 ShanghaiChina Centre for Biosystems Neuroscienceand NanotechnologyCity University of Hong KongKowloonHong Kong SARChina Institute of Data and Information Tsinghua Shenzhen International Graduate SchoolTsinghua University518071 ShenzhenGuangdongChina

Metalens,characterized by their unique functions and distinctive physical properties,have gained significant attention for their potential *** further optimize the performance of metalens,it is necessary to characterize the phase modulation of the *** this study,we present a multi-distance phase retrieval system based on optical field scanning and discuss its convergence and *** findings indicate that the system is capable of retrieving the phase distribution of the metalens as long as the measurement noise is low and the total length of the scanned light field is sufficiently *** system enables the analysis of focal length and aberration by utilizing the computed phase *** extend our investigation to measure the phase distribution of the metalens operating in the near-infrared(NIR)spectrum and identify the impact of defects in the sample on the ***,we conduct a comparative analysis of the phase distribution of the metalens in air and ethanol and observe the variations in the phase modulation of the metalens in different working *** system provides a straightforward method for the phase characterization of metalens,aiding in optimizing the metalens design and functionality.

关键词： phase system distribution

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Routing valley exciton emission of a WS_(2) monolayer via delocalized Bloch modes of in-plane inversion-symmetry-broken photonic crystal slabs

引用

Light(Science & Applications) 2020年第1期9卷 603-610页

作者： Jiajun Wang Han Li Yating Ma maoxiong zhao Wenzhe Liu Bo Wang Shiwei Wu Xiaohan Liu Lei Shi Tian Jiang Jian Zi State Key Laboratory of Surface Physics Key Laboratory of Micro-and Nano-Photonics Structures(Ministry of Education)and Department of PhysicsFudan University200433 ShanghaiChina College of Advanced Interdisciplinary Studies National University of Defense Technology410073 ChangshaChina Collaborative Innovation Center of Advanced Microstructures Nanjing University210093 NanjingChina

The valleys of two-dimensional transition metal dichalcogenides(TMDCs)offer a new degree of freedom for information *** take advantage of this valley degree of freedom,on the one hand,it is feasible to control valleys by utilizing different external stimuli,such as optical and electric *** the other hand,nanostructures are also used to separate the valleys by near-field ***,for both of the above methods,either the required low-temperature environment or low degree of coherence properties limit their further ***,we demonstrate that all-dielectric photonic crystal(PhC)slabs without in-plane inversion symmetry(C_(2) symmetry)can separate and route valley exciton emission of a WS2 monolayer at room *** with circularly polarized photonic Bloch modes of such PhC slabs,valley photons emitted by a WS_(2) monolayer are routed directionally and are efficiently separated in the far *** addition,far-field emissions are directionally enhanced and have long-distance spatial coherence properties.

关键词： valley symmetry Bloch

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Phase characterisation of metalenses

引用

Light(Science & Applications) 2021年第4期10卷 551-561页

作者： maoxiong zhao Mu Ku Chen Ze-Peng Zhuang Yiwen Zhang Ang Chen Qinmiao Chen Wenzhe Liu Jiajun Wang Ze-Ming Chen Bo Wang Xiaohan Liu Haiwei Yin Shumin Xiao Lei Shi Jian-Wen Dong Jian Zi Din Ping Tsai State Key Laboratory of Surface Physics Key Laboratory of Micro-and Nano-Photonic Struaures(Ministry of Education)and Department of PhysicsFudan University200433 ShanghaiChina Department of Electronic and Information Engineering The Hong Kong Polytechnic University999077 Hong KongChina School of Physics and State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen University510275 GuangzhouChina Shanghai Engineering Research Center of Optical Metrology for Nanofabrication(SERCOM) 200433 ShanghaiChina State Key Laboratory on Tunable Laser Technology Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information SystemShenzhen Graduate SchoolHarbin Institute of Technology518055 ShenzhenChina

Metalenses have emerged as a new optical element or system in recent years,showing superior performance and abundant ***,the phase distribution of a metalens has not been measured directly up to now,hindering further quantitative evaluation of its *** have developed an interferometric imaging phase measurement system to measure the phase distribution of a metalens by taking only one photo of the interference *** on the measured phase distribution,we analyse the negative chromatic aberration effect of monochromatic metalenses and propose a feature size of *** sensitivities of the phase response to wavelength between the Pancharatnam-Berry phase-based metalens and propagation phase-reliant metalens are directly observed in the ***,through phase distribution analysis,it is found that the distance between the measured metalens and the brightest spot of focusing will deviate from the focal length when the metalens has a low nominal numerical aperture,even though the metalens is ideal without any fabrication *** also use the measured phase distribution to quantitatively characterise the imaging performance of the *** phase measurement system will help not only designers optimise the designs of metalenses but also fabricants distinguish defects to improve the fabrication process,which will pave the way for metalenses in industrial applications.

关键词： character distribution nominal

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

角度分辨光谱技术及其应用

引用

光学学报 2023年第16期43卷 253-276页

作者：赵景怡赵茂雄石磊资剑复旦大学应用表面物理国家重点实验室上海200433 复旦大学微纳光子结构教育部重点实验室上海200433 上海微纳制程智能检测工程技术研究中心上海200433 复旦大学-光检测与光集成校企联合研究中心上海200433

光谱是物质的光学指纹信息,是研究光与物质相互作用的重要手段。角度分辨光谱技术是对光谱在角度维度的进一步解析,能够分辨光的强度、偏振态和相位等信息,从而在生物医学、材料科学和微纳光子学等研究领域得到广泛应用。为了实现角度... 详细信息

光谱是物质的光学指纹信息,是研究光与物质相互作用的重要手段。角度分辨光谱技术是对光谱在角度维度的进一步解析,能够分辨光的强度、偏振态和相位等信息,从而在生物医学、材料科学和微纳光子学等研究领域得到广泛应用。为了实现角度分辨光谱,目前已经开发了多种实验系统,并涌现出了大量数据处理算法。本文将介绍角度分辨光谱的生成方法、数据处理技术及其在不同研究领域中的应用。

关键词：角度分辨光谱光学逆散射问题光学散射成像光学特征尺寸缺陷检测

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Thin-film neural networks for optical inverse problem

引用

Light(Advanced Manufacturing) 2021年第4期2卷 23-30页

作者： Lingjie Fan Ang Chen Tongyu Li Jiao Chu Yang Tang Jiajun Wang maoxiong zhao Tangyao Shen Minjia Zheng Fang Guan Haiwei Yin Lei Shi Jian Zi State Key Laboratory of Surface Physics Key Laboratory of Micro-and Nano-Photonic Structures(Ministry of Education)and Department of PhysicsFudan UniversityShanghai 200433China Shanghai Engineering Research Center of Optical Metrology for Nano-fabrication(SERCOM) Shanghai 200433China Institute for Nanoelectronic devices and Quantum computing Fudan UniversityShanghai 200438China Collaborative Innovation Center of Advanced Microsstructures Nanjing UniversityNanjing 210093China

The thin-film optical inverse problem has attracted a great deal of attention in science and industry,and is widely applied to optical ***,as the number of layers increases,the time it takes to extract the parameters of thin films drastically ***,we introduce the idea of exploiting the structural similarity of all-optical neural networks and applied it to the optical inverse *** propose thin-film neural networks(TFNNs)to efficiently adjust all the parameters of multilayer thin *** test the performance of TFNNs,we implemented a TFNN algorithm,and a reflectometer at normal incidence was *** on multilayer thin films with 232 layers,it is shown that TFNNs can reduce the time consumed by parameter extraction,which barely increased with the number of layers compared with the conventional *** were also used to design multilayer thin films to mimic the optical response of three types of cone cells in the human *** light passing through these multilayer thin films was then recorded as a colored photo.

关键词： method inverse film

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonic-dispersion neural networks for inverse scattering problems

引用

Light(Science & Applications) 2021年第10期10卷 1819-1828页

作者： Tongyu Li Ang Chen Lingjie Fan Minjia Zheng Jiajun Wang Guopeng Lu maoxiong zhao Xinbin Cheng Wei Li Xiaohan Liu Haiwei Yin Lei Shi Jian Zi State Key Laboratory of Surface Physics Key Laboratory of Micro-and NanoPhotonics Structures(Ministry of Education)and Department of PhysicsFudan UniversityShanghai 200433China Shanghai Engineering Research Center of Optical Metrology for Nano-fabrication(SERCOM) Shanghai 200433China Institute of Precision Optical Engineering School of Physics Science and EngineeringTongji UniversityShanghai 200092China National Institute of Metrology Beijing 100029China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China

Inferring the properties of a scattering objective by analyzing the optical far-field responses within the framework of inverse problems is of great practical ***,it still faces major challenges when the parameter range is growing and involves inevitable experimental ***,we propose a solving strategy containing robust neuralnetworks-based algorithms and informative photonic dispersions to overcome such challenges for a sort of inverse scattering problem—reconstructing grating *** two typical neural networks,forward-mapping type and inverse-mapping type,we reconstruct grating profiles whose geometric features span hundreds of nanometers with nanometric sensitivity and several seconds of time consumption.A forward-mapping neural network with a parameters-to-point architecture especially stands out in generating analytical photonic dispersions accurately,featured by sharp Fano-shaped ***,to implement the strategy experimentally,a Fourier-optics-based angle-resolved imaging spectroscopy with an all-fixed light path is developed to measure the dispersions by a single shot,acquiring adequate *** forward-mapping algorithm can enable real-time comparisons between robust predictions and experimental data with actual noises,showing an excellent linear correlation(R2>0.982)with the measurements of atomic force *** work provides a new strategy for reconstructing grating profiles in inverse scattering problems.

关键词： scattering dispersion neural

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

在高中讲授最小作用量原理的尝试和探索

引用

物理教学 2022年第9期44卷 73-76页

作者：王熠峰赵茂雄石磊华东师范大学第二附属中学上海201203 复旦大学物理学系上海200433

最小作用量原理(the least action principle)曾被广泛运用于力学、光学、量子力学和相对论的物理研究中。在高中阶段,通过理解最小作用量原理可以联系光学、力学等初看并不相干的领域。在本次研究中,复旦大学和华师大二附中的学生利用... 详细信息

最小作用量原理(the least action principle)曾被广泛运用于力学、光学、量子力学和相对论的物理研究中。在高中阶段,通过理解最小作用量原理可以联系光学、力学等初看并不相干的领域。在本次研究中,复旦大学和华师大二附中的学生利用“步青计划”,借用简单的计算机数值计算手段,探究了在高中讲授最小作用量原理的可行性。论文共分为:光的折射与最速降线,哈密顿原理和抛体运动两个部分,旨在通过简单的计算机数值计算引出这个伟大原理并提供高中生新的理解物理和探索物理的视角,鼓励学生在高中阶段通过最小作用量原理构建整体性的物理思维,完善对所学物理知识的统一理解,激发学生对物理的学习兴趣。与此同时,本课题以互动性的交互式界面为例.希望能够提供一个优秀高中生学习高阶课程和知识的教学手段。

关键词：最小作用量原理最速降线光折射哈密顿原理抛体运动计算机数值计算交互式界面

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Momentum-space imaging spectroscopy for the study of nanophotonic materials

引用

Science Bulletin 2021年第8期66卷 824-838,M0004页

作者： Yiwen Zhang maoxiong zhao Jiajun Wang Wenzhe Liu Bo Wang Songting Hu Guopeng Lu Ang Chen Jing Cui Weiyi Zhang Chia Wei Hsu Xiaohan Liu Lei Shi Haiwei Yin Jian Zi Department of Physics Key Laboratory of Micro-and Nano-Photonic Structures(Ministry of Education)and State Key Laboratory of Surface PhysicsFudan UniversityShanghai 200433China Shanghai Engineering Research Center of Optical Metrology for Nano-fabrication(SERCOM) Shanghai 200433China Ming Hsieh Department of Electrical Engineering University of Southern CaliforniaLos AngelesCA 90089USA Collaborative Innovation Center of Advanced Microstructures Fudan UniversityShanghai 200433China

The novel phenomena in nanophotonic materials, such as the angle-dependent reflection and negative refraction effect, are closely related to the photonic dispersions EepT. EepT describes the relation between energy E and momentum p of photonic eigenmodes, and essentially determines the optical properties of materials. As EepT is defined in momentum space(k-space), the experimental method to detect the energy distribution, that is the spectrum, in a momentum-resolved manner is highly required. In this review, the momentum-space imaging spectroscopy(MSIS) system is presented, which can directly study the spectral information in momentum space. Using the MSIS system, the photonic dispersion can be captured in one shot with high energy and momentum resolution. From the experimental momentumresolved spectrum data, other key features of photonic eigenmodes, such as quality factors and polarization states, can also be extracted through the post-processing algorithm based on the coupled mode theory. In addition, the interference configurations of the MSIS system enable the measurement of coherence properties and phase information of nanophotonic materials, which is important for the study of light-matter interaction and beam shaping with nanostructures. The MSIS system can give the comprehensive information of nanophotonic materials, and is greatly useful for the study of novel photonic phenomena and the development of nanophotonic technologies.

关键词： Momentum space imaging Nanophotonic material Photonic dispersion Photonic eigenmode Quality factor Polarization state

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Full description of dipole orientation in organic light-emitting diodes

引用

Chinese Optics Letters 2023年第2期21卷 92-98页

作者：范灵杰赵茂雄楚娇沈唐尧郑敏嘉关放殷海玮石磊资剑 Department of Physics Key Laboratory of Micro-and Nano-Photonic Structures(Ministry of Education)and State Key Laboratory of Surface PhysicsFudan UniversityShanghai 200433China Shanghai Engineering Research Center of Optical Metrology for Nano-fabrication(SERCOM) Shanghai 200433China Institute for Nanoelectronic Devices and Quantum Computing Fudan UniversityShanghai 200438China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China

Considerable progress has been made in organic light-emitting diodes(OLEDs)to achieve high external quantum efficiency,among which dipole orientation has a remarkable *** most cases,the radiation of the dipoles in OLEDs is theoretically predicted with only one orientation parameter to match with corresponding ***,we develop a new theory with three orientation parameters to fully describe the relationship between dipole orientation and power ***,we design an optimal test structure for measuring all three orientation *** three orientation parameters could be retrieved from non-polarized *** theory provides a universal plot of dipole orientations in OLEDs,paving the way for designing more complicated OLED devices.

关键词： organic light-emitting diodes dipole orientation Fourier series expansion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

结构性政策对绿色低碳发展的作用——基于DSGE模型的分析

引用

西南金融 2023年第11期 58-72页

作者：王懋雄赵晟骜张柏杨中国人民银行四川省分行四川成都610041

绿色低碳发展是社会经济的一种结构性调整,同时也面临着诸如绿色外部性等问题。根据以往研究和实践经验,结构性政策往往是解决结构性矛盾的有效方法。本文通过构建包含清洁型、污染型两类异质性企业的DSGE模型,创新性地将污染企业碳排... 详细信息

绿色低碳发展是社会经济的一种结构性调整,同时也面临着诸如绿色外部性等问题。根据以往研究和实践经验,结构性政策往往是解决结构性矛盾的有效方法。本文通过构建包含清洁型、污染型两类异质性企业的DSGE模型,创新性地将污染企业碳排放对社会产生的环境负面影响作为一种使居民产生“无效消费”的负外部性引入模型,研究了定向贴息、定向降准、绿色再贷款、碳税等四种结构性政策对绿色低碳发展的影响。研究发现:对于总产出而言,除贴息影响不大外,另外三种结构性政策的正向冲击均有较明显的负面影响;对于碳存量而言,定向降准、绿色再贷款和碳税的正向冲击都有显著抑制作用。基于此,本文结合绿色低碳发展实践提出相应政策建议,以期为构建绿色低碳发展政策体系提供参考。

关键词：绿色低碳发展绿色金融绿色经济结构性政策货币政策财政政策碳税碳减排

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：