نتایج جستجو برای: electromagnetic wave polarization

تعداد نتایج: 343047  

Journal: :Physical review letters 2013
Carl Pfeiffer Anthony Grbic

Huygens' principle is a well-known concept in electromagnetics that dates back to 1690. Here, it is applied to develop designer surfaces that provide extreme control of electromagnetic wave fronts across electrically thin layers. These reflectionless surfaces, referred to as metamaterial Huygens' surfaces, provide new beam shaping, steering, and focusing capabilities. The metamaterial Huygens' ...

2002
Fioralba Cakoni David Colton

We consider the inverse scattering problem of determining the shape of a perfect conductor D from a knowledge of the scattered electromagnetic wave generated by a time-harmonic plane wave incident upon D. By using polarization effects we establish the validity of the linear sampling method for solving this problem that is valid for all positive values of the wave number. We also show that it su...

2008
Valerio Faraoni

There are conflicting statements in the literature about the gravitational Faraday rotation of the plane of polarization of polarized electromagnetic radiation travelling through a gravitational wave. This issue is reconsidered using a simple formalism describing the rotation of the plane of polarization in a gravitational field, in the geometric optics approximation. It is shown that, to first...

Journal: :J. Comput. Physics 2010
Peijun Li

Consider a time-harmonic electromagnetic plane wave incident on an inhomogeneity embedded in a two-layered medium. In this paper, a method of coupling of finite element and boundary integral equation methods is presented for the solutions of electromagnetic scattering in both transverse electric and magnetic polarization cases. The well-posedness of the continuous and discrete problems, as well...

Journal: :Physical review letters 2015
David J Stark Chinmoy Bhattacharjee Alexey V Arefiev Toma Toncian R D Hazeltine S M Mahajan

3D particle-in-cell simulations demonstrate that the enhanced transparency of a relativistically hot plasma is sensitive to how the energy is partitioned between different degrees of freedom. For an anisotropic electron distribution, propagation characteristics, like the critical density, will depend on the polarization of the electromagnetic wave. Despite the onset of the Weibel instability in...

2006
F. Ruiz Ruiz

A large family of noncommutative Einstein-Maxwell null pp -waves to order one in the noncommutativity parameters is constructed. They are solutions to the Einstein and field equations for general relativity coupled to a Seiberg-Witten electromagnetic field. Noncommutativity enters the spacetime metric through a conformal factor and is responsible for dilating/contracting the separation between ...

2014
Lei Sun Jie Gao Xiaodong Yang

Broadband electromagnetic transparency phenomenon is realized with a well-designed gradedpermittivity sphere, which has an extremely low scattering cross section over a wide frequency range, based on the generalized Mie scattering theory and numerical simulation in full-wave condition. The dynamic polarization cancellation is revealed by studying the variation of the polarization with respect t...

1997
M. Viggiano

The peculiar features of the mixing in the neutral pseudoscalar mesonsK0−K0 can be introduced by the analogy to the optical polarization. The time-reversed not-invariant processes and the related phenomenon of CP -nonconservation can be then joined to the dissipative effects which yield a not vanishing imaginary part in the relevant propagation of electromagnetic radiation in a medium. Thus, th...

2009
Jingxiao Cao Hui Liu Tao Li Shuming Wang Tianqi Li Xiang Zhang

A tri-rod structure (TRS), which can be seen as a combination of the double-rod structures reported by V. M. Shalaev et al. [Opt. Lett. 30, 3356 (2005)10.1364/OL.30.003356], is proposed to control the polarization state of an electromagnetic (EM) wave in the near-infrared range. When a plane EM wave propagates through the TRS system, two orthogonal hybrid magnetic eigenmodes are established as ...

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