Behavior of Electromagnetic Waves in Different Media and - download pdf or read online

By Ali Akdagli

This entire quantity completely covers wave propagation behaviors and computational thoughts for electromagnetic waves in numerous advanced media. The bankruptcy authors describe strong and complex analytic and numerical the way to clear up their particular electromagnetic difficulties for complicated media and geometries besides. This e-book could be of curiosity to electromagnetics and microwave engineers, physicists and scientists.

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J. & Buckthat, J. E. (1987). Surface roughness of stainless steel and electroformed nickle standards using HeNe laser. Opt. Laser Technol 19(4), 189-196. , Sakai, A. & Kizuka, O. (1988'). Development of a high resolution sensor for surface roughness, Opt. Eng. 27(^6). 498-502. [11] Vorburger, T. , Marx, E. & Lettieri, T. R. (1993). Regimes of surface roughness measurable with light scattering. Appl Opt. 32(19!. 3401-3408. [12] Raymond, C. , Murnane, M. , H. Naqvi, S. S. & Mcneil J. R. (1995). Metrology of subwavelength photoresist gratings usine optical scat-terometry.

The introduction of this artificial surface S allows us to divide the computation domain into two regions: region I - inside the surface S and region II - outside the surface S . The general solution of Helmholtz equation in cylindrical or spherical coordinates surface S Z Z q r=R j surface S r=R j Y z region II X Y region II X region I region I (a) (b) Fig. 7. Formulation of the problem for single object with irregular shape in: (a) cylindrical coordinates and (b) spherical coordinates. in region II takes the following form: Et (α, β, γ ) = 2 ∞ ∑ ∑ ∞ ∑ k =1 n=− ∞ m =− ∞ β γ E α Aknm f knm ( α ) f m ( β ) f n ( γ ), (4) 337 Electromagnetic Wave Scattering from Material Electromagnetic Wave Scattering from Material Objects Using Hybrid Methods Objects Using Hybrid Methods Ht (α, β, γ ) = 2 ∞ ∞ ∑ ∑ ∑ β k =1 n=− ∞ m =− ∞ γ H α Aknm f knm ( α ) f m ( β ) f n ( γ ), (5) where f kα (α) determines the variation of the fields in direction normal to the surface S β γ and f m ( β) f n determines the variation of the fields in directions tangential to the surface S .

This intensity k will be to characterize scattering on concrete realization of a surface z( x , y ) (with a concrete λ= set of casual phases φnm ). For comparison of calculations with experimental data it is   necessary to operate with average on ensemble of surfaces intensity I s = Es Es∗ . Such 2  2 kXY cos Θ1  intensity has appeared proportional intensity I 0 =   of the wave reflected πr   from the corresponding smooth basic surface, therefore for the theoretical analysis of results it is more convenient to use average scattering coefficient ρs = Is I0 .

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