Scattering from a conducting surface coated with multilayers of lossy dielectric material (transverse electric polarization)

1992 ◽  
Vol 72 (7) ◽  
pp. 3005-3008 ◽  
Author(s):  
Chi‐Sen Lin ◽  
M. Tahir Yaqoob
Keyword(s):  
Transverse Electric ◽  
Dielectric Material ◽  
Electric Polarization ◽  
Conducting Surface ◽  
Lossy Dielectric

scholarly journals Rapidly convergent quasi-periodic Green functions for scattering by arrays of cylinders—including Wood anomalies

2017 ◽  
Vol 473 (2199) ◽  
pp. 20160802 ◽  
Author(s):  
Oscar P. Bruno ◽  
Agustin G. Fernandez-Lado
Keyword(s):  
Green Function ◽  
Transverse Electric ◽  
Resonance Region ◽  
Transverse Magnetic ◽  
Electric Polarization ◽  
Arbitrary Cross Section ◽  
Full Spectrum ◽  
Recent Contribution ◽  
Periodic Arrays ◽  
Wood Anomaly

This paper presents a full-spectrum Green-function methodology (which is valid, in particular, at and around Wood-anomaly frequencies) for evaluation of scattering by periodic arrays of cylinders of arbitrary cross section—with application to wire gratings, particle arrays and reflectarrays and, indeed, general arrays of conducting or dielectric bounded obstacles under both transverse electric and transverse magnetic polarized illumination. The proposed method, which, for definiteness, is demonstrated here for arrays of perfectly conducting particles under transverse electric polarization, is based on the use of the shifted Green-function method introduced in a recent contribution (Bruno & Delourme 2014 J. Computat. Phys. 262 , 262–290 ( doi:10.1016/j.jcp.2013.12.047 )). A certain infinite term arises at Wood anomalies for the cylinder-array problems considered here that is not present in the previous rough-surface case. As shown in this paper, these infinite terms can be treated via an application of ideas related to the Woodbury–Sherman–Morrison formulae. The resulting approach, which is applicable to general arrays of obstacles even at and around Wood-anomaly frequencies, exhibits fast convergence and high accuracies. For example, a few hundreds of milliseconds suffice for the proposed approach to evaluate solutions throughout the resonance region (wavelengths comparable to the period and cylinder sizes) with full single-precision accuracy.

The transverse electric plasmonic modes in a negative refractive index black phosphorene waveguide structure

2021 ◽  
Author(s):  
Cuihong Yang ◽  
J. Y. Zhang ◽  
R. Wieser ◽  
Wen Xu
Keyword(s):  
Refractive Index ◽  
Chemical Potential ◽  
Transverse Electric ◽  
Dielectric Material ◽  
Negative Refractive Index ◽  
Practical Method ◽  
Existence Condition ◽  
Waveguide Structure ◽  
Symmetric Mode ◽  
Black Phosphorene

Abstract We consider the transverse electric (TE) plasmonic modes supported by black phosphorene (BP) in a parallel waveguide structure with left-handed material (LHM) instead of the conventional right-handed dielectric material. The existence condition of the TE BP surface plasmon polariton (SPP) is $\mathrm{Im}\sigma>0$. When an electric field is polarized along one of the two orthogonal crystal axes, the anisotropic symmetric and anti-symmetric plasmonic modes depend on the incident optical energy, the chemical potential, and the distance between two BP sheets can be observed. The symmetric mode has a more extensive effective refractive index, which possesses stronger field confinement. With a decreasing distance $d$ between two BP sheets, the coupling strength between the two separate BPSPP waves increases. When $d$ is small enough, the anti-symmetric mode root does not exist. LHMs can be used to realize a TE BPSPP mode to enhance the localization of the BPSPP, which is a practical method in optoelectronic devices based on black phosphorene.

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