When does the choice of the refractive index of a linear, homogeneous, isotropic, active, dielectric medium matter?
Two choices are possible for the refractive index of a linear, homogeneous, isotropic, active, dielectric material. Either of the choices is adequate for obtaining frequency-domain solutions for (i) scattering by slabs, spheres, and other objects of bounded extent; (ii) guided--wave propagation in homogeneously filled, cross-sectionally uniform, straight waveguide sections with perfectly conducting walls; and (iii) image formation due to flat lenses. The correct choice does matter for the half-space problem, but that problem is not realistic.
Lakhtakia
Akhlesh
A
Department of Engineering Science & Mechanics, Pennsylvania State University, University Park, PA 16802, USA.
Geddes
Joseph B
JB
Mackay
Tom G
TG
D000465:Algorithms; D016880:Anisotropy; D003198:Computer Simulation; D008027:Light; D008420:Manufactured Materials; D008962:Models, Theoretical; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation