Specifically, we focus on the reflection and transmission of em waves from a temporal boundary and clarify the two different physical processes that contribute to. Reflection, absorption and transmission of te electromagnetic. The work by huang 5 discussed the problem of reflection and transmission of electromagnetic waves when the dielectric is moving in any arbitrary direction. In this paper the re ection of an obliquely incident electromagnetic wave on a randomly layered multiscale halfspace is analyzed. Consider two ropes, one thin and one thick, connected together, and a sinusoidal wave moving from left to right along the ropes. We will see that the boundary conditions are satisfied only if reflected and transmitted waves are present. The reflection and transmission problem of an electromagnetic slow wave by a uniformly moving dielectric slab was investigated theoretically. Theory of reflection reflection and transmission of. If the frequency of the electromagnetic wave is lower than the muf, the electromagnetic wave can return from the ionosphere and continue reflective transmission between the earths surface and the ionosphere. The reflection and transmission matrices of electromagnetic waves obliquely incident on a chiral slab situated between semiinfinite different media are presented.
The reflection and transmission properties of electromagnetic waves by a semiinfinite uniaxial plasma moving perpendicular to the plane of incidence are investigated theoretically for the incident h and e plane wave. Reflection and transmission of waves at the interface of perfect electromagnetic conductor pemc. Reflection and transmission of electromagnetic waves at a temporal boundary yuzhe xiao,1, drew n. The present work is concerned with the reflection and transmission properties of electromagnetic waves from finely divided fractal layers. Reflection of electromagnetic radiation accessscience from. Use features like bookmarks, note taking and highlighting while reading theory of reflection. Transmission and reflection of electromagnetic waves from an inhomogeneous dielectric slab karthikeyan hahadevan and atef z. The reflection and transmission of electromagnetic waves by a moving dielectric medium are investigated theoretically, and the reflection and transmission coefficients are determined. Reflection and transmission of plane electromagnetic waves. Plane electromagnetic waves and wave propagation 7. In this paper the reflection of an obliquely incident electromagnetic wave on a ran domly layered multiscale halfspace is analyzed.
One secondary wave is transmitted through the interface into the mater. Pdf analysis of the reflection of electromagnetic waves in. The curves of the group refractive angles, power of the reflected and transmitted waves for te and tm incident waves are presented for three cases of dielectric. The numerical solutions are in good agreement with theoretical solutions for two different kinds of electron density profiles. Maslov, reflection and transmission of electromagnetic waves at a temporal boundary. A plane wave with a time factor exp iwt is incident at an angle j on a stratified medium composed of m homogeneous layers. In specular reflection the phase of the reflected waves depends on the choice of the origin of coordinates, but the relative phase between s and p te and tm polarizations is fixed by the properties of the media and of the. Note 2 the value of the expression is unchanged if the position r varies in a direction normal. It is intended for physicists, chemists, applied mathematicians and engineers, and is written in a simple direct style, with all necessary mathematics explained in the text. The law of reflection concerns the incident and reflected rays as in the case of a beam from a flashlight striking a mirror or, more precisely, the wave normals of the incident and reflected rays and the normal to the reflecting surface all lie in one plane, called the plane of incidence, and that.
Compute the reflection and transmission coefficients by numerically solving equation. A numerical scheme is described to compute the reflection, absorption, and transmission coefficients of te m, 0 and plane electromagnetic waves propagating in a nonuniform plasma slab. Investigations of transverse electromagnetic wave propagation in isotropic plasmas are usually based on the coldplasma equations. The general expression for the reflection, absorption, and transmission of em waves in a plasma with arbitrary density profile cannot be expressed in a closed form. Reflection and transmission of electromagnetic waves at a temporal. Agrawal1 1the institute of optics, university of rochester, rochester, new york 14627, usa 2electrical, computer, and telecom. Transmission and reflection of electromagnetic waves in randomly layered media josselin garnier yand knut s. Pdf reflection and transmission of electromagnetic waves. Comment article pdf available in optics letters 3920 october 2014 with 140 reads how we measure reads. Specifically, we focus on the reflection and transmission of em waves from a temporal boundary and clarify the two different physical processes that contribute to them. Electromagnetic waves in the most general linear reciprocal uniaxial media are considered. Reflection and transmission of electromagnetic, particle and acoustic waves springer series on atomic, optical, and plasma physics book 87 kindle edition by lekner, john. The law of reflection states that the angle of incidence and angle of reflection are equal, as sketched to the side.
The speed c of waves in a rope under tension is c f, where f is the tension, and. Reflection and transmission of electromagnetic waves at a. It is found that the moving magnetized plasma medium allows certain stop and pass bands under suitable physical conditions. Properties of electromagnetic waves and light reflection. The reflected and transmitted fields are examined in various special cases. It will give us an idea of how much wave is 7 electromagnetic field theory by r. The reflection and transmission coefficients r sp, r ss, t sp and t ss for an incident qsv wave have the same 4. In appendix a, the theory of reflection and transmission of monochromatic plane waves from an. This section serves as motivation for the fact that light is an electromagnetic wave.
In this series of games, your students will learn about the electromagnetic spectrum and how light travels. A boundary is a place where there is a change in how hard it is for the wave to cause a disturbance the two media. We develop an exact iterative algorithm that provides the reflection and transmission coefficients for a multilayers stack made of two and different homogeneous materials constructed according to the pattern of a cantor fractal set. They claimed to identify a correct set and to resolve the existing discrepancy in the literature.
The basic underling assumption in this case is all the waves are planar. Reflection of waves off straight barriers follows the. This work focuses on the analysis of electromagnetic waves penetrating from air to fresh water. Reflection and transmission of electromagnetic slowwaves. The analysis will be confined to harmonic plane electromagnetic waves propagating parallel to the gradients in free electron density, i. Reflection and transmission of electromagnetic waves in a non. The bending of the path is an observable behavior when the medium is a two or threedimensional medium. We point out that the boundary conditions discarded by xiao et al. For a dielectric medium where snells law can be used to relate the incident and transmitted angles, fresnels equations can be stated in terms of the angles of incidence and transmission. Numerical results for the reflection and the transmission coefficients for an obliquely incident h wave have been obtained for several values of the magnetic field and the electron density of the moving plasma half.
Both processes can be accompanied by diffusion also called scattering, which is the process of. Waveguiding systems, including metallic, dielectric, and surface waveguides, transmission lines, impedance matching, and sparameters. Both processes can be accompanied by diffusion also called scattering, which is the process of deflecting a unidirectional. The book gives a systematic and unified treatment reflection and transmission of electromagnetic and particle waves at interfaces. We consider propagation of an electromagnetic em wave through a dynamic optical medium whose refractive index varies with time. Field coupling terms in the media equations are assumed. Reflection and transmission of electromagnetic waves at. Pdf we consider propagation of an electromagnetic em wave through a dynamic optical medium whose refractive index varies with time. Light propagates in a straight line in all directions, whe n the light falls on a reflecting surface, it bounces in the same medium and this phenomenon is known as light reflection, light reflection is the bouncing returning back of light waves in the same medium when they meet a reflecting surface. Reflection and transmission of electromagnetic waves in a.
Learn about absorption, transmission, reflection, refraction, scattering, and. Reflection and transmission of electromagnetic waves at a moving magnetoplasma half. Engineering technology, rochester institute of technology, rochester, new york 14623, usa. Light more precisely, visible light is the type of electromagnetic radiation that is detectable by the human eye. Once the primary wave hits the interface two secondary waves are produced. Mar 12, 20 the reflection and transmission properties of plane waves on the interface of uniaxial chiral media with the optical axis parallel to the interface are investigated. It is found that the reflection and the transmission characteristics for an incident e wave are unaffected by the anisotropy and the velocity of the moving medium. The theory is appropriate for novel reciprocal microwave materials which have properties of chiral composites and omega structures or both and can be modeled by uniaxial bianisotropic constitutive relations. The dispersive dielectric medium is assumed to be a cold plasma medium.
The reflection and transmission of electromagnetic waves. This paper surveys reflection and transmission of the electromagnetic waves in a non. Reflection and transmission of waves at interfaces in this lecture you will learn. The reflection and transmission of electromagnetic waves by a moving dispersive dielectric half. Reflection of light is either specular mirrorlike or diffuse retaining the energy, but losing the image depending on the nature of the interface. Reflection occurs when there is a bouncing off of a barrier. The normal of the boundary surface is in the zdirection.
Variation of transmission coefficient for skinfat interface. Reflection and transmission of electromagnetic waves at electron. Reflection and transmission of electromagnetic waves by a. The entire book is freely available in pdf 2up format, and in pdf 1up format. Reflection is the process by which electromagnetic radiation is returned either at the boundary between two media surface reflection or at the interior of a medium volume reflection, whereas transmission is the passage of electromagnetic radiation through a medium. The reflectance and transmittance extrema at normal incidence have been studied and the conditions for which these extrema occur have been given. In the design of highpower electromagnetic radiators and the associated pulsed power, one often encounters the problem of transitioning electromagnetic waves between different media e. Analysis of the reflection of electromagnetic waves in an unsteady moving magnetized plasma slab. Reflection, refraction and diffraction are all boundary behaviors of waves associated with the bending of the path of a wave. The fabrics used in this study were made by a stainless steelpolyester spun yarn.
Reflection and transmission of electromagnetic wave at normal. What happens when waves strike an interface between two different media reflection and transmission of waves at interfaces application of efield and hfield boundary conditions ece 303 fall 2005 farhan rana cornell university waves at. Exact, explicit expressions are obtained for the field of a radiating periodic point dipole located in medium 1 at the center of a spherical shell of medium 2, which is bounded by medium 3. Elsherbeni electrical engineering department university of mississippi university, ms 38677 usa abstract the reflected and transmitted field vectors resulting from an. Reflectiontransmission add light additional reflectiontransmission termsadd more light to the object making it brighter option 1.
In plane waves reflection from media interface, we basically find the two parameters mentioned above reflection coefficient transmission coefficient. Sep 10, 2017 reflection and transmission of electromagnetic wave at normal incidence are discussed in this lecture. Representation of electromagnetic elds in a medium consider wave propagation along the zdirection in an isotropic medium. The reflection, transmission, and absorption behaviors of electromagnetic waves in fabrics have been studied by a network analyzer at 30 mhz1500 mhz and 0 dbm. Reflection and transmission of plane electromagnetic waves in. A numerical scheme is described to compute the reflection, absorption, and transmission coefficients of tem,0tem,0 and plane electromagnetic waves propagating in a nonuniform plasma slab. The impedance mismatch generally leads to the reflection, absorption, and transmission of em waves. Reflection and transmission of a plane electromagnetic wave on a. For each value of p the first row of numerical data is based on. For example, the inductance, capacitance, and impedance of a coaxial cable is given by where a and b are the inner and outer radii of the. Transmission any light that is not absorbed or reflected at an interface is transmitted.
Reflection and transmission of waves on string i fixed end and free end ijee mainsneet duration. That is, they give the reflection and transmission coefficients for waves parallel and perpendicular to the plane of incidence. The simplest reflection laws are those that govern plane waves of radiation. Nuherical results in table 1 the calculated reflection and transmission coefficients due to a normally incident plane wave are given for different values of p. Numerical results for the reflection and the transmission coefficients for an obliquely incident h wave have been obtained for several values of the magnetic field and the electron. The fresnel equations or fresnel coefficients describe the reflection and transmission of light or electromagnetic radiation in general when incident on an interface between different optical media. Osa reflection and transmission of electromagnetic waves. Reflection and transmission of electromagnetic waves on. Reflection and transmission of em waves mit opencourseware.
Waves in a stretched string before discussing the reflection of light, it will be useful to discuss the following problem. The impedance for electromagnetic waves is defined as the ratio between the voltage and current waves, where are inductance and capacitance per unit length in medium. Reflection and transmission of light from multilayer films. Destructive interference occurs when two waves are offset by a phase of m, or half a wavelength. Kshetrimayum 3202018 transmitted and reflected when a plane wave hit an interface between two medium. Transmission and reflection of electromagnetic waves. Part 3 reflection and transmission of ultrasonic waves. Pdf reflection and transmission of electromagnetic waves at a. What happens when waves strike an interface between two different media reflection and transmission of waves at interfaces application of efield and hfield boundary conditions ece 303 fall 2005 farhan rana cornell university. The relationships among the field vectors of the incident, reflected and transmitted waves, and the reflection and transmission coefficients were derived based on the electromagnetic theory and the principle of special.
Electromagnetic waves will pass through the ionosphere once the frequency of it is higher than the muf. Reflection and transmission of electromagnetic waves at a temporal boundary. Aug 01, 2016 the propagation, reflection, and transmission of plane waves, and the analysis and design of multilayer films. This situation may be described mathematically in terms of three propagating waves. Unlike common optical media, nonuniform plasma is an inhomogeneous and lossy medium. Reflection and transmission of electromagnetic waves on the. Reflection cofficient and transmission coefficient are also explained in this video. Reflection and transmission of electromagnetic waves from. Download it once and read it on your kindle device, pc, phones or tablets. For fast pulses or hypoband cw high frequencies one is concerned about reflections at the interface between the two media. Reflection and transmission of waves at boundaries between different media, there is generally both reflection and transmission. In this case, the plasma becomes anisotropic, and electromagnetic field components of the transmitted wave should be hybrid modes. Reflection, absorption, and transmission of light science. Field coupling terms in the media equations are assumed to be the most general uniaxial dyadics.
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