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相关论文: A dielectric microcylinder makes a nanocylindrical…

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Generation of a photonic nanojet by a linearly polarized wave beam or a plane wave impinging a dielectric microcylinder implies partial conversion of the propagating waves into the evanescent ones. This conversion is manifested in nanojet…

光学 · 物理学 2021-02-24 R. Heydarian , V. Klimov , C. Simovski

Two-dimensional problem of evanescent wave scattering by dielectric or metallic cylinders near the interface between two dielectric media is solved numerically by boundary integral equations method. A special Green function was proposed to…

光学 · 物理学 2017-04-17 O. V. Belai , L. L. Frumin , S. V. Perminov , D. A. Shapiro

By numerical simulations, we show that properly arranged two dimensional periodic arrays, formed by dielectric cylinders embedded in parallel in a uniform medium, can indeed act as an optical lens to focus electromagnetic waves, in…

凝聚态物理 · 物理学 2009-11-10 Bikash C. Gupta , Zhen Ye

An electron beam traversing a structured plasmonic field is shown to undergo diffraction with characteristic angular patterns of both elastic and inelastic outgoing electron components. In particular, a plasmonic {\it grating} (e.g., a…

介观与纳米尺度物理 · 物理学 2016-07-20 F. Javier Garcia de Abajo , Brett Barwick , Fabrizio Carbone

We report the first study on the optical force exerted by an evanescent wave on a small sphere with both electric and magnetic response to the incident field, immersed in an arbitrary nondissipative medium. New expressions and effects from…

光学 · 物理学 2016-11-26 M. Nieto-Vesperinas , J. J. Saenz

Interactions between light and conducting nanostructures can result in a variety of novel and fascinating phenomena. These properties may have wide applications, but their underlying mechanisms have not been completely understood. From…

光学 · 物理学 2016-01-20 X. R. Huang , R. W. Peng , Mu Wang

Interfering liquid surface waves are generated by electrically driven vertical oscillations of two or more equispaced pins immersed in a liquid (water). The corresponding intensity distribution, resulting from diffraction of monochromatic…

光学 · 物理学 2009-11-10 Tarun Kr. Barik , Anushree Roy , Sayan Kar

While conventional optical trapping techniques can trap objects with submicron dimensions, the underlying limits imposed by the diffraction of light generally restrict their use to larger or higher refractive index particles. As the index…

光学 · 物理学 2016-06-29 Mark Daly , Viet Giang Truong , Síle Nic Chormaic

We present a surface trap which allows for studying the coherent interaction of ultracold atoms with evanescent waves. The trap combines a magnetic Joffe trap with a repulsive evanescent dipole potential. The position of the magnetic trap…

量子物理 · 物理学 2015-05-13 Helmar Bender , Philippe Courteille , Claus Zimmermann , Sebastian Slama

Observations and theoretical principles suggest that electromagnetic waves, including light, travel more slowly in dielectric media than in vacuum. Maxwell's equations, incorporating material dependent permittivity and permeability,…

光学 · 物理学 2024-12-16 Vernon Cooray , Gerald Cooray , Farhad Rachidi , Marcos Rubinstein

Electromagnetic wave scattering by many parallel to $z-$axis, thin, impedance, circular infinite cylinders is studied asymptotically as $a\to 0$. Let $D_m$ be the crossection of the $m-$th cylinder, $a$ be its radius, and…

数学物理 · 物理学 2012-09-03 A. G. Ramm

We rigorously calculate the propagation and scattering of electromagnetic waves by rectangular and random arrays of dielectric cylinders in a uniform medium. For regular arrays, the band structures are computed and complete bandgaps are…

无序系统与神经网络 · 物理学 2009-11-07 Bikash C. Gupta , Yu-Yu Chen , Zhen Ye

When subjected to monochromatic incident light a nanoparticle will emit light which then interferes with the incident beam. With sufficient contrast and sufficiently close to the particle this interference pattern may be recorded with a…

光学 · 物理学 2019-02-26 T. G. Myers , H. Ribera , W. S. Bacsa

We observe and investigate, both experimentally and theoretically, electromagnetically-induced transparency experienced by evanescent fields arising due to total internal reflection from an interface of glass and hot rubidium vapor. This…

原子物理 · 物理学 2015-06-11 R. Thomas , C. Kupchak , G. S. Agarwal , A. I. Lvovsky

The field of an evanescent wave in a space with a thin metal layer is explored. The wave number of the evanescent wave exceeds many times the wave number of a uniform plane wave in adjoining gaps. In agreement with the results of the…

光学 · 物理学 2007-05-23 V. S. Zuev

Ultra-compact, densely integrated optical components manufactured on a CMOS-foundry platform are highly desirable for optical information processing and electronic-photonic co-integration. However, the large spatial extent of evanescent…

We develop a versatile theoretical approach to the study of cold-atom diffractive scattering from light-field gratings by combining calculations of the optical near-field, generated by evanescent waves close to the surface of periodic…

原子物理 · 物理学 2009-11-07 G. Leveque , C. Meier , R. Mathevet , C. Robiliiard , J. Weiner , C. Girard , J. C. Weeber

We compare the behavior of propagating and evanescent light waves in absorbing media with that of electrons in the presence of inelastic scattering. The imaginary part of the dielectric constant results primarily in an exponential decay of…

介观与纳米尺度物理 · 物理学 2009-11-07 S. Anantha Ramakrishna , A. D. Armour

The integration of nanoscale electronics with conventional optical devices is restricted by the diffraction limit of light. Metals can confine light at the subwavelength scales needed, but they are lossy, while dielectric materials do not…

光学 · 物理学 2014-10-06 Saman Jahani , Zubin Jacob

We propose and experimentally demonstrate a novel optical method for trapping and cooling dielectric nanospheres at (sub)-micron distances from a reflective metallic surface. By translating a tilted mirror towards the focus of a single-beam…

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