Abstract

The reflection and transmission coefficients for an inhomogeneous layer separating two semiinfinite homogeneous media are examined. Two different cases are investigated, each with a different permittivity profile for the inhomogeneous layer. Detailed examination of these coefficients reveals the relation of their magnitude and phase to the wavelength and to the permittivity of the homogeneous media. These relations are presented graphically, along with explanations based on the concepts of input impedance and ray theory. Finally, approximate expressions are obtained for the reflection and transmission coefficients for a particular variation of one case.

© 1968 Optical Society of America

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