scholarly journals Assessing the contributions of surface waves and complex rays to far-field Mie scattering by use of the Debye series

1992 ◽  
Vol 9 (5) ◽  
pp. 781 ◽  
Author(s):  
Edward A. Hovenac ◽  
James A. Lock
Keyword(s):  
Surface Waves ◽  
Mie Scattering ◽  
Far Field ◽  
Debye Series ◽  
Complex Rays

A ray expansion with matrix coefficients for sourcesin absorbing anisotropic media

1976 ◽  
Vol 15 (1) ◽  
pp. 151-163 ◽  
Author(s):  
J. A. Bennett
Keyword(s):  
Mode Coupling ◽  
Homogeneous Medium ◽  
Anisotropic Media ◽  
Far Field ◽  
Wave Polarization ◽  
Problem Method ◽  
Matrix Coefficients ◽  
Leading Term ◽  
Green’S Matrix ◽  
Complex Rays

A ray or quasi-optical approximation is developed, using complex rays. The ‘amplitude’ terms are matrices, rather than vectors that represent the wave polarization. Thus, the way the propagation resolves a source into various modes is described. The second term in the amplitude series is shown to include a type of inter-mode coupling. It is shown that initial values needed to integrate along the rays can be chosen so that the leading term of the approximation agrees with the far-field solution for localized sources in a homogeneous medium. By invoking the ‘canonical problem’ method, the result is extended to give an approximation for the Green's matrix in a slowly-varying medium.

scholarly journals Plasmonic and Mie scattering control of far-field interference for regular ripple formation on various material substrates

2011 ◽  
Vol 19 (20) ◽  
pp. 19093 ◽  
Author(s):  
Go Obara ◽  
Naoki Maeda ◽  
Tomoya Miyanishi ◽  
Mitsuhiro Terakawa ◽  
Nikolay N. Nedyalkov ◽  
...  
Keyword(s):  
Mie Scattering ◽  
Far Field ◽  
Ripple Formation

scholarly journals Helicity-delinked manipulations on surface waves and propagating waves by metasurfaces

Nanophotonics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 3473-3481 ◽  
Author(s):  
Shiqing Li ◽  
Zhuo Wang ◽  
Shaohua Dong ◽  
Sixiong Yi ◽  
Fuxin Guan ◽  
...  
Keyword(s):  
Surface Waves ◽  
Near Field ◽  
Far Field ◽  
Proof Of Concept ◽  
Circularly Polarized ◽  
Propagating Waves ◽  
Very High ◽  
Opposite Helicity

AbstractAlthough many approaches have been proposed to manipulate propagating waves (PWs) and surface waves (SWs), usually each operation needs a separate meta-device, being unfavorable for optical integrations. Here, we propose a scheme to design a single meta-device that can efficiently generate SWs and/or PWs with pre-designed wavefronts, under the excitations of circularly polarized (CP) PWs with different helicity. As a proof of concept, we design and fabricate a microwave meta-device and experimentally demonstrate that it can convert incident CP waves of opposite helicity to SWs possessing different wavefronts and traveling to opposite directions, both exhibiting very high efficiencies. We further generalize our scheme to design a meta-device and numerically demonstrate that it can either excite a SW beam with tailored wavefront or generate a far-field PW with pre-designed wavefront, as shined by CP waves with different helicity. Our work opens the door to achieving simultaneous controls on far- and near-field electromagnetic environments based on a single ultra-compact platform.

Reflection and transmission of surface waves at a vertical interface in anisotropic elastic media

1993 ◽  
Vol 83 (5) ◽  
pp. 1355-1372
Author(s):  
E. N. Its ◽  
J. S. Lee
Keyword(s):  
Surface Waves ◽  
Wave Reflection ◽  
Analytical Procedure ◽  
Far Field ◽  
Elastic Media ◽  
Reflection And Transmission ◽  
Trade Off ◽  
Transmission Coefficients ◽  
Dyadic Representation ◽  
Anisotropic Elastic

Abstract Propagation of surface waves across a vertical interface between anisotropic blocks is considered in this paper. Dyadic representation of a far field Green's function for an anisotropic half-space is constructed first. An analytical procedure is then developed to determine the reflection and transmission coefficients of surface waves at the vertical interface between two laterally homogeneous anisotropic quarter-spaces. Numerical results of Rayleigh wave reflection at vertical interfaces between dissimilar blocks are presented and the trade-off between anisotropy and inhomogeneity is discussed.

Radiation and scattering of water waves by rigid bodies

1971 ◽  
Vol 46 (1) ◽  
pp. 151-164 ◽  
Author(s):  
J. L. Black ◽  
C. C. Mei ◽  
M. C. G. Bray
Keyword(s):  
Surface Waves ◽  
Incident Wave ◽  
Water Waves ◽  
Variational Formulation ◽  
Rigid Bodies ◽  
Small Oscillation ◽  
Circular Cylinders ◽  
Wave Forces ◽  
Far Field ◽  
Plane Incident Wave

Schwinger's variational formulation is applied to the radiation of surface waves due to small oscillation of bodies. By means of Haskind's theorem the wave forces on a stationary body due to a plane incident wave are found using only far-field properties. Results for horizontal rectangular and vertical circular cylinders are presented.

Excitation of surface waves in magnetohydrodynamics

1990 ◽  
Vol 43 (2) ◽  
pp. 183-188 ◽  
Author(s):  
Bhimsen K. Shivamoggi
Keyword(s):  
Magnetic Field ◽  
Gravitational Field ◽  
Asymptotic Behaviour ◽  
Pressure Distribution ◽  
Surface Waves ◽  
Initial Value Problem ◽  
Large Time ◽  
Far Field ◽  
Two Dimensional ◽  
Initial Value

A study is made of the transient development of two-dimensional linearized surface waves generated by a localized steady pressure distribution on the interface between a uniformly streaming, semi-infinite, infinitely conducting plasma subjected to a gravitational field and the confining vacuum magnetic field. The linearized equations associated with an initial-value problem are used to obtain the large-time asymptotic behaviour of the disturbance in the far field.

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