TITLE:
Antireflection Coating at Metamaterial Waveguide Structure by Using Superlattices (LANS)
AUTHORS:
H. M. Mousa
KEYWORDS:
Angle of Incidence, Magnetic Fraction, Metamaterial, Microwave Band, Reflection, Transmission, Superlattices, Visible Band
JOURNAL NAME:
Journal of Modern Physics,
Vol.5 No.8,
May
29,
2014
ABSTRACT: The characteristics
of electromagnetic wave reflection and transmission by multilayered structures
consisting of a pair of left-handed material (LHM) and superlattices (LANS)
slabs inserted between two semi-infinite dielectric media are investigated for
photovoltaic and solar energy applications. Maxwell’s equations are used to
determine the electric and magnetic fields of the perpendicular polarized wave
incident at each layer. Snell’s law is applied and the boundary conditions are
imposed at each layer interface to calculate the reflected and transmitted
coefficients of the structure. The reflected, transmitted powers are determined
using these coefficients by a recursive method. The reflected and transmitted
powers are computed in both visible and microwave spectral band with the
appropriate LHM for each band and appropriate location of LANS in the
structure. They are illustrated as a function of the incident wavelength, angle
of incidence, magnetic fraction of LANS and thickness of the slabs with the
emphasis on the appropriate refractive indices. I found that, zero reflectance
and maximum transmittance of the incident powers are achieved for visible
spectral band at a single frequency if LHM and LANS have the same refractive
index of opposite signs with the same width and more magnetic material of LANS
while the reflected power is zero for less magnetic material of LANS in the
microwave spectral band which realizes antireflection coating in this
structure.