检索结果-南通市图书馆

Generalization of the optical theorem: experimental proof for radially polarized beams

Light(Science & Applications) 2018年第1期7卷 708-717页

作者： Alexey V.Krasavin paulina segovia Rostyslav Dubrovka Nicolas Olivier Gregory A.Wurtz Pavel Ginzburg Anatoly V.Zayats Department of Physics King’s College LondonStrandLondon WC2R 2LSUK Department of Electronic Engineering Queen Mary University of LondonLondonUK School of Electrical Engineering Tel Aviv UniversityRamat AvivTel Aviv 69978Israel ITMO University St.Petersburg 197101Russia Departamento de Optica CICESECarretera Ensenada-Tijuana 391822860 EnsenadaMexico Laboratory for Optics&Biosciences Ecole PolytechniqueCNRS UMR 7645F-91128 PalaiseauFrance Department of Physics University of North FloridaJacksonville FL 32224USA

The optical theorem,which is a consequence of the energy conservation in scattering processes,directly relates the forward scattering amplitude to the extinction cross-section of the *** derived for planar scalar waves,it neglects the complex structure of the focused beams and the vectorial nature of the electromagnetic *** the other hand,radially or azimuthally polarized fields and various vortex beams,essential in modern photonic technologies,possess a prominent vectorial field ***,we experimentally demonstrate a complete violation of the commonly used form of the optical theorem for radially polarized beams at both visible and microwave *** show that a plasmonic particle illuminated by such a beam exhibits strong extinction,while the scattering in the forward direction is *** generalized formulation of the optical theorem provides agreement with the observed *** reported effect is vital for the understanding and design of the interaction of complex vector beams carrying longitudinal field components with subwavelength objects important in imaging,communications,nanoparticle manipulation,and detection,as well as metrology.

关键词： structure. field. theorem

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

Spontaneous emission in non-local materials

引用

Light(Science & Applications) 2016年第1期5卷 1-10页

作者： Pavel Ginzburg Diane J Roth Mazhar E Nasir paulina segovia Alexey V Krasavin James Levitt Liisa M Hirvonen Brian Wells Klaus Suhling David Richards Viktor A Podolskiy Anatoly V Zayats Department of Physics King’s College LondonStrandLondon WC2R 2LSUK Present address:School of Electrical Engineering Tel Aviv UniversityTel Aviv 69978Israel Department of Physics and Applied Physics University of Massachusetts LowellOne University AveLowellMA 01854USA Present address:Department of Physics University of HartfordWest HartfordCT 06117USA

Light–matter interactions can be strongly modified by the surrounding ***,we report on the first experimental observation of molecular spontaneous emission inside a highly non-local metamaterial based on a plasmonic nanorod *** show that the emission process is dominated not only by the topology of its local effective medium dispersion,but also by the non-local response of the composite,so that metamaterials with different geometric parameters but the same local effective medium properties exhibit different Purcell factors.A record-high enhancement of a decay rate is observed,in agreement with the developed quantitative description of the Purcell effect in a non-local *** engineered material non-locality introduces an additional degree of freedom into quantum electrodynamics,enabling new applications in quantum information processing,photochemistry,imaging and sensing with macroscopic composites.

关键词： composite electromagnetic materials non-local optical properties plasmonic metamaterials quantum electrodynamics spontaneous emission

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

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

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

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：