title: Electromagnetic inhomogeneous waves at planar boundaries: tutorial.
abstract: In this review paper, we summarize the fundamental properties of inhomogeneous waves at the planar interface between two media. We point out the main differences between the wave types: lateral waves, surface waves, and leaky waves. We analyze each kind of inhomogeneous wave, giving a quasi-optical description and explaining the physical origin of some of their properties.
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Frezza
authors.forename: Nicola
authors.initials: N
authors.lastname: Tedeschi