Abstract
An electromagnetic plane wave incident obliquely from a transparent medium onto the surface of an absorbing medium can be reflected with 0 or π phase shift if (i) the wave is p (TM) polarized, and (ii) the complex relative dielectric function ∊ is such that
. Furthermore, the locus of ∊ such that the reflection coefficient for the p polarization is real at the same angle of incidence, is a circle, and that of ∊1/2 (the complex relative refractive index) is Bernoulli’s lemniscate.
© 1979 Optical Society of America
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